Question

Каковы корни?

Answer 1

$\frac{(x+1)( x^{2} -8x+16)}{x+2} = \frac{x^{3}-8 x^{2} +16x+ x^{2} -8x+16 }{x+2} = \frac{ x^{3}-7 x^{2} -8x+16}{x+2}$