Algebrahard · Past Paper
Factorize: x^4 + x^2y^2 + y^4.
A(x^2+xy+y^2)(x^2-xy+y^2)
B(x^2+y^2)^2
C(x^2+xy-y^2)(x^2-xy+y^2)
D(x+y)^4
✓ Correct Answer: A — (x^2+xy+y^2)(x^2-xy+y^2)
This is a standard factorization using the completing square method: (x^2+y^2)^2 - (xy)^2.
Share this question