Resolve the factors :

1) x^4 + 4

2) x^4 + x^2 y^2 + y^4

3) x^2 - y^2 - 4xz + z^2

Asked by Karuna | 22nd Apr, 2018, 10:05: AM

Expert Answer:

x4 + x2 y2 + y4 = x4 + 2x2 y2 + y4 - x2 y
                     = (x2 + y2) - x2 y
                     = (x2 + y2 + xy) (x2 + y2 - xy)

Answered by Sneha shidid | 22nd Apr, 2018, 07:31: PM