Question

a, tim x; 2*(x-1)⁶=128

b,x²=x

Answer 1

=> (x - 1)² = 64 => (x - 1)² = 8² => x - 1 = 8 => x = 9

b/ => x² - x = 0 

=> x(x - 1) = 0 

=> x = 0 hoặc x - 1 = 0 => x = 1

Answer 2

a) 2 . (x - 1)² = 128

(x - 1)² = 64 = + 8

=> x = 9 hoặc x = -7

b) x² = x

<=> x \(\in\) {0; -1; 1}