Answer :
Answer:
x^4-5x^2y^2+ 4y^4 = (x^2-4y^2)(x^2-y^2)
Step-by-step explanation:
Here in this question, we are to resolve the given expression into factors
x^4-5x^2y^2+ 4y^4
That can be rewritten as;
x^4-x^2y^2-4x^2y^2+4y^4
= x^2(x^2-y^2)-4y^2(x^2-y^2)
= (x^2-4y^2)(x^2-y^2)