решите уравнение (х+4)^2 - (х+1)(х-2)=2х-3

Question

решите уравнение (х+4)^2 - (х+1)(х-2)=2х-3

Answer 1

x^2+8x+16-x^2+2x-x+2-2x+3=0

7x+21=0

7x=-21

x=-3

Answer 2

(х+4)^2-(х+1)(х-2)=2х-3

x^2+8x+16-x^2+x+2-2x+3=0

9x+16+2-2x+3=0

7x+18+3=0

7x+21=0

x=-21/7

x=-3