Ôn tập toán 7
Các câu hỏi tương tự
Tìm x: \(x-\frac{\frac{x}{2}-\frac{x}{3}}{4}-\frac{x}{6}=\frac{2\left(1+x\right)}{3}-\frac{\frac{x}{3}+\frac{1-x^7}{4}}{2}\)
Tìm x: \(3\left(x-2\right)^2-1\frac{1}{4}\left(1+3x\right)^2=1\frac{1}{3}\left(x-1\right)\left(3-x\right)-1\frac{1}{6}x\left(x-3\right)\)
Tìm x: \(\frac{3\frac{1}{2}x-4}{6}+\frac{2+\frac{1}{4}x}{3}=1\frac{1}{4}x\left(x-1\right)-\frac{7-\frac{3}{4}x}{3}\)
Tìm x: \(3\left(x-2\right)^2-1\frac{1}{4}\left(1+3x\right)^2=1\frac{1}{3}\left(x-1\right)\left(3+x\right)-1\frac{1}{6}x\left(x-3\right)\)
Tìm x: 1 + 2 ( x - 1 )( x + 2 ) - 2 ( 2x - 1 )^2 = 3 - 4 ( 2 + 3x ) - 3 (x + 1)
Tìm x: \(\left(x-2\right)^3-2\left(x+1\right)^2=\left(x+1\right)^3-3\left(2-x\right)^2\)
Tìm x: \(\left(x-2\right)^3+2\left(1+2x\right)^2=\left(1+x\right)^3-3\left(x-2\right)^2-\left(x-1\right)\)
BÀI 1 - Tính
a (0,8)^5/(0,4)^6
b 8^10+4^10/8^4+4^11
BÀI 2 - Tìm x ϵ Z
a 2^x-1 = 16
b (x-1)^2 = 25
c (x-1)^x+2 = (x-1)^x+6
d (x+20)^100 + I y+4 I = 0
Tìm x : \(\frac{x+1}{x^2-4}-\frac{5x}{2-x}=\frac{4}{x+2}+3\)