1 x 2
= 2
1 x 3
= 3
1 x 4
= 4
1 x 5
= 5
1 x 6
= 6
1 x 7
= 7
1 x 8
= 8
1 x 9
= 9
Bác Hồ sinh ngày: 19/05/1890
1*2=2
1*3=3
1*4=4
1*5=5
1*6=6
1*7=7
1*8=8
1*9=9
ngày sinh của Bác Hồ là ngày 19/5/1890
1+2+3+4+5+6+7+8+9-1-2-3-4-5-6-7-8-9*1*2*3*4*5*6*7*8*9:1:2:3:4:5:6:7:8:9=???
đố 1+2+3+4+5+6+7+8+9 .1.2.3.4.5.6.7.8.9 = bao nhiêu
1+1+1=6
2+2+2=6
3×3÷3=6
√4+√4+√4=6
5+5÷5=6
6×6÷6=6
7 ? 7 ? 7=6
8 ? 8 ? 8 =6
9 ? 9 ? 9=6
10 ? 10 ? 10=6
1) √(2x-1) <= 8-2x
2) √[(x+1)(4-x)] > x-2
3) √(x-2x^2+1) > 1-x
4) √(x+5) - √(x+4) > √(x+3)
5) √(5x-1) - √(x-1) > √(2x-4)
6) √(x+3) >= √(2x-8) + √(7-x)
7) √(x+2) - √(3-x) < √(5-2x)
8) √(x+1) > 3 - √(x+4)
9) √(5x-1) - √(4x-1)<= 3√x
10) { {√[2(x^2-16)]} / √(x-3) }+ √(x-3) > (7-x) / √(x-3)
Giúp mình 10 câu này với ạaa
1+1+1+2+2+3+4+4+5+5+6+7+8+9
1+2+3+4+5+6+7+8+9+0.1.2.3.4.5.6.7.8.9.0.1-2-3-4-5-6-7-8-9-0=? ai tra loi nhanh va dung cho 1 tick
\(\frac{1}{\sqrt{1}-\sqrt{2}}-\frac{1}{\sqrt{2}-\sqrt{3}}+\frac{1}{\sqrt{3}-\sqrt{4}}-\frac{1}{\sqrt{4}-\sqrt{5}}+\frac{1}{\sqrt{5}-\sqrt{6}}-\frac{1}{\sqrt{6}-\sqrt{7}}+\frac{1}{\sqrt{7}-\sqrt{8}}-\frac{1}{\sqrt{8}-\sqrt{9}}\)
RUT GON
Rút gọn : \(\frac{1}{\sqrt{1}-\sqrt{2}}-\frac{1}{\sqrt{2}-\sqrt{3}}+\frac{1}{\sqrt{3}-\sqrt{4}}-\frac{1}{\sqrt{4}-\sqrt{5}}+\frac{1}{\sqrt{5}-\sqrt{6}}-\frac{1}{\sqrt{6}-\sqrt{7}}+\frac{1}{\sqrt{7}-\sqrt{8}}-\frac{1}{\sqrt{8}-\sqrt{9}}\)
10 ^ ( 1 + 2 - 3 x 4 : 5 + 6 - 7 x 8 : 9 ) = ?
1 ^ 3 ^ 5 ^ 7 ^ 9 = ?
2 ^ 4 ^ 6 ^ 8 = ?
123+234+345+456+567+678+789+890+901+012 = ?
1 + 1 x 2 = ?
2 + 2 : 2
(3 + 3 - 3 X 3 : 3 ^ 3 ) bình phương cho 3 = ?
1 x A = 1 + A = 1 : A = 1 - A = 1 ^ A = 1 bình phương A = A = ?
