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

Question

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

Answer 1

(х²-1)(х²+3)=(х²+1)²+х
х*4-х²+3х²-3=х*4+2х²+1+х
-х²+3х²-3=2х²+1+х
2х²-3=2х²+1+х
-3=1+х
х=-3-1
х=-4

Comments

х*4-это х в 4 степени?