Question

因式分解 x^4-2x^2y^2-4xy^3+4x^3y+y^2(4x^2+3/4y^2)

Answer 1

x^4-2*x^2*y^2-4*x*y^3+4*x^3*y+y^2*(4*x^2+(3/4)*y^2)

=1/4*(2*x^2+4*x*y-3*y^2)*(2*x^2+4*x*y-y^2)