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Trong Do Phu
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Quyết Nguyễn
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Nguyễn linh Nhật
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๖ۣۜNɦσƙ ๖ۣۜTì
15 tháng 7 2019 lúc 12:58

So sánh : và \(72^{44}-72^{43}\)

Ta có :

       \(72^{45}-72^{44}=72^{44}\left(72-1\right)\)

       \(72^{44}-72^{43}=72^{43}\left(72-1\right)\)

Vì 7244 > 7243 => 7244 (72-1)  > 7243 (72-1)

                    hay 7245 -7244 > 7244 - 7243 

            

          

Nguyễn linh Nhật
15 tháng 7 2019 lúc 13:45

Nhanh hộ mọi người😦😦😦😦😦😨

lê văn ngọc anh
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Trần Quỳnh Anh
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Phùng Tuấn Minh
13 tháng 10 2020 lúc 21:24

a/ 26176

b/ 8

c/472392

d/ Ko tính dc

Thấy mình đẳng cấp ko

Cho mình 10 k nhé

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nữ hoàng ánh sáng
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nữ hoàng ánh sáng
24 tháng 11 2018 lúc 11:05

8 : 30 hết hạn nha

giúp mk đi

pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

hoàng lan ngọc
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Nguyễn Việt Anh
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KILLFRIENDS
18 tháng 9 2019 lúc 19:56

mình cũng hỏi về cái này gấp nha ai biết trả lời câu nào thì trả

nữ hoàng ánh sáng
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KAITO KID
24 tháng 11 2018 lúc 15:27

23b⇒a2=b3⇒a8=b12" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">23b⇒a2=b3⇒a8=b12

34a⇒c3=a4⇒c6=a8" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">34a⇒c3=a4⇒c6=a8

56c⇒d5=c6" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">56c⇒d5=c6

a8=b12=c6=d5" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">a8=b12=c6=d5

a8=b12=c6=d5=k⇒{a=8kb=12kc=6kd=5k" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">a8=b12=c6=d5=k⇒{a=8kb=12kc=6kd=5k

Lại có: a+b+c+d=62a+b+c+d=62

8k+12k+6k+5k=62⇒8k+12k+6k+5k=62

31k=62⇒31k=62

k=2⇒k=2

a=16b=24c=12d=10⇒{a=16b=24c=12d=10

Vậy Thơ 16 tuổi, Toán 24 tuổi, Thi 12 tuổi, Tài 10 tuổi

KAITO KID
24 tháng 11 2018 lúc 15:27

23b" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">23b (1)

34a" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">34a => 23.34b" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">23.34b = 12b" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">12b (2)

56c" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">56c => 56.12b=512b" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">56.12b=512b (3)

23b+b+12b+512b=62" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">23b+b+12b+512b=62

23+1+512+12)" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">23+1+512+12) = 62

3112b=62" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">3112b=62

1231=24" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">1231=24

23.24=16" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">23.24=16

12.24" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">12.24 = 12

512.24=10" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline; float:none; line-height:normal; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax">512.24=10

Vậy tuổi của Thơ là 16 ; Toán là 24; Thi là 12; Tài là 10