Question

Решите уравнение: (x-2)²+8x=(x-1)(x+1)

Answer 1

(x-2)²+8x=(x-1)(x+1)
(x-2)(x-2)+8x=x²+x-x-1
x²-2x-2x+4+8x-x²+1=0
4x+5=0
4x=-5
x=-5/4

Answer 2

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