(-5)^32.20^43/(-8)^29.125^25
Những câu hỏi liên quan
(-5)^32.20^43/(-8)^29.125^25
\(=\dfrac{5^{32}\cdot5^{43}\cdot2^{86}}{\left(-2\right)^{87}\cdot5^{75}}=\dfrac{1}{-2}=-\dfrac{1}{2}\)
Đúng 0
Bình luận (0)
2/5+3/5
3/4+5/4
3/8+7/8
35/25+7/25
bài 1:Tính nhanh
a,64*25+35*25+25
b,58*42+32*8+5*16
c,(42*43+43*57+43)-360/4
d,(372-19*4)+(981/9-13)
e,456/2*8+456/3-102
a)2500
b)2772
c)1974
d)347
e)1874
k mk nha
Đúng 0
Bình luận (0)
a, [(6.x - 39) :3] .28 =5628
B, 5.(7.x- 45) = 23 . 52 - 32.20
Giúp tớ nhanh vs aj
`#3107.101107`
a,
\([(6.x - 39) \div3] .28 =5628\)
`\Rightarrow (6x - 39) \div 3 = 5628 \div 28`
`\Rightarrow (6x - 39) \div 3 = 201`
`\Rightarrow 6x - 39 = 201 . 3`
`\Rightarrow 6x - 39 = 603`
`\Rightarrow 6x = 42`
`\Rightarrow x = 42 \div 6`
`\Rightarrow x = 7`
Vậy, `x = 7`
b,
`5(7x - 45) = 2^3 . 5^2 - 3^2 . 20`
`\Rightarrow 5(7x - 45) = 8.5.5 - 9.4.5`
`\Rightarrow 5(7x - 45) = 5.(8.5 - 9.4)`
`\Rightarrow 5(7x - 45) = 5.(40 - 36)`
`\Rightarrow 7x - 45 = 5.(40 - 36) \div 5`
`\Rightarrow 7x - 45 = 4`
`\Rightarrow 7x = 49`
`\Rightarrow x = 7`
Vậy, `x = 7.`
Đúng 5
Bình luận (0)
4) 87+(-45)-(-79)
5) (-15)+45-62
6) 120: (-5)+72
7) -147-130: (-13)
8) 125. (-8) : (-25). (-7)
9) 25-18+(-43)
10) -18-3.(-20)
4) 121
5) - 32
6) 48
7) - 137
8) - 280
9) - 36
10) 42
Đúng 2
Bình luận (0)
4) 41
5) -32
6) 48
7) -137
8) -280
9) -36
10) 42
Đúng 0
Bình luận (0)
Xem thêm câu trả lời
tinh (-5)^32x20^43/(-8)^29x125^25
5^32 × 20^43 / 8^29 × 125^25
5^32 × 20^43 / 8^29 × 125^25
Tính nhanh:
a) 64 x 25 + 35 x 25 + 25
b) 58 x 42 + 32 x 8 + 5 x 16
c) ( 42 x 43 + 57 x 43 + 43 ) - 360 : 4
d) 456 : 2 x 181456 : 3 - 102
* Nhanh lên nhé *
a. 64 x 25 + 35 x 25 + 25
= 64 x 25 + 35 x 25 + 25 x 1
= 25 x ( 64 + 35 + 1 )
= 25 x 100
= 2500
b. 58 x 42 + 32 x 8 + 5 x 16
c. ( 42 x 43 + 57 x 43 + 43 ) - 360 : 4
= 42 x 43 + 57 x 43 + 43 x 1 - 90
= 43 x ( 42 + 57 +1 ) - 90
= 43 x 100 - 90
= 4300 - 90
= 4210
d. 456 : 2 x 181456 : 3 - 102
Trả lời:
a,\(64\times25+35\times25+25\)
\(=25\times\left(64+35+1\right)\)
\(=25\times100\)
\(=2500\)
b,\(58\times42+32\times8+5\times16\)
\(=2436+256+80\)
\(=2772\)
c,\(\left(42\times43+57\times43+43\right)-360\div4\)
\(=43\times\left(42+57+1\right)-90\)
\(=43\times100-90\)
\(=4300-90\)
\(=4210\)
d,\(456\div2\times181456\div3-102\)
\(=228\div3\times181456-102\)
\(=76\times181456-102\)
\(=13790656-102\)
\(=13790554\)
a,64 x 25 + 35 x 25 +25
=25x(64+35+1)
=25x100
=250
b, 58 x 42 +32 x 8 +5 x 16
=2772
c,(42 x 43 +57 x 43+43 )-360:4
=43x(42+57+1) - 360 :4
= 43 x 100 -90
=4300-90
=4210
d,456:2 x 181456:3 -102
=228x181456:3-102
=13790656-102
=13790554