Question

x la puterea 2 = 1 pe 4

Answer 1

$x^{2} = \frac{1}{4} \\ x= \frac{1}{2}$ sau $x=- \frac{1}{2}$

Answer 2

x²-(1/2)²=0
(x+1/20(x-1/2)=0
x1=-1/2
x2=1/2