(X+4)^2-(x+1)(x-2)=2x-3

Question

(X+4)^2-(x+1)(x-2)=2x-3

Answer 1

( Х + 4 )^2 - ( Х + 1 )( Х - 2 ) = 2х - 3
Х^2 + 8х + 16 - ( х^2 - 2х + Х - 2 ) = 2х - 3
Х^2 + 8х + 16 - х^2 + Х + 2 = 2х - 3
9х + 18 = 2х - 3
7х = - 21
Х = - 3