Question

5. Решите уравнение: |4x² + 4x|– 1 = 0​

Answer 1

$\displaystyle |4x^2+4x|-1=0\\|4x^2+4x|=1\\4x^2+4x=1,4x^2+4x=-1\\\\x_1=\frac{-1-\sqrt{2} }{2},x_2=-\frac{1}{2},x_3=\frac{-1+\sqrt{2} }{2}$