Question

simplify (x²+y²)(x+y)(x-y)+y⁴​

Answer 1

( x² + y² ) ( x + y ) ( x - y ) + y⁴

solution

( x³ + x²y + y²x + y³ ) ( x - y ) + y⁴

x⁴ - y⁴ + y⁴

x⁴