Question

factorize - x^4+y^4-11x^2y^2

Answer 1

Step-by-step explanation:

x^4+y^4-11x^2y^2

x^4+y^4-2x^2y^2-9x^2y^2

(x^2-y^2)-9x^2y^2

(x^2-y^2-3xy)(x^2-y^2+3xy)