Question

14 Решите уравнение (х – 2)2 + 8x = (х - 1)(1 + х).​

Answer 1

$(x - 2) {}^{2} + 8x = (x - 1)(1 + x) \\ {x}^{2} - 4x + 4 + 8x = {x}^{2} - 1 \\ 4x + 4 = - 1 \\ 4x = - 5 \\ x = - \frac{5}{4} \\ x = - 1.25$