Question

Упростите выражение 4х(а+х+y)+4a(a-x-y)-4y(x-a-y)

Answer 1

4x(a+x+y)+4a(a-x-y)-4y(x-a-y)
4ax+4x²+4xy+4a²-4ax-4ay-4xy+4ay+4y²
4x²+4a²+4y²

Answer 2

4x(a+x+y)+4a(a-x-y)-4y(x-a-y)=(a+x+y)4x-4a+4y