Question

(X square y - x square)^2

Answer 1

Answer: $x^4y^2-2x^4y+x^4$

Expand $(x^2y-x^2)^2$

→ $\{x^2(y-1)\}^2$ Pulling x² out is an easier way then squaring.

→ $x^4(y-1)^2$

→ $x^4(y^2-2y+1)$

→ $x^4y^2-2x^4y+x^4$