Question

Упростите выражение 5(a+b)^2-10ab

Answer 1

5(а^2+2ab+b^2)-10ab=5a^2+10ab+5b^2-10ab=5a^2+5b^2

Answer 2

5(a^2+2ab+b^2)-10ab=5a^2+10ab+5b^2-10ab=5(a^2+b^2)