Question

Решите уравнение:
(X–1)(x^2+8x+16)=6(x+4)

Answer 1

(X–1)(x^2+8x+16)=6(x+4)
(X–1)(x+4)²=6(x+4)
(X–1)(x+4)²-6(x+4)=0
[(X–1)(x+4)-6](x+4)=0
x=-4
x²+4x-x-4-6=0
x²+3x-10=0
D=b²-4ac=9+4*10=49=7²
x(23)=(-3+-7)/2= 2  -5
x= -5  2  -4