Question

y=(x в квадрате-1) (x в квадрате+2x-3)

Answer 1

y-x^2*x^2+x^2*2x-x^2-x^2*3-x^2-2x+3)=0
y-(x^4+2x^3-4x^2-2x+3)=0
-x^4-2x^3+4x^2+2x+y=3