Question

(x-1)(x+2)=10 пожалуйста помогите

Answer 1

x²+2x-x-2=10

x²+x-12=0

D= 1+48=49

x1= (-1+7)/2= 3

x2= (-1-7)/2= -4

Answer 2

$left(x-1right)left(x+2right)=10medskip\x^2+x-2-10=0medskip\x^2+x-12=0medskip\left(x-3right)left(x+4right)=0medskip\left[begin{gathered}x=3\x=-4end{gathered}$

Ответ. $xinleft{3;-4right}$