Question

4 (а-в)^2-(а+в)^2 помогите решить!!!

Answer 1

4*(a-в)^2-(a+в)^2=4*(a^2-2aв+в^2)-(a^2+2aв+в^2)= 4*(a^2-2aв+в^2)-a^2-2aв-в^2= 4a^2-8aв+4в^2-a^2-2aв-в^2=3a^2+3в^2-10aв

Answer 2

4(а-b)²-(а+b)²=4(a²-2ab+b²)-(a²+2ab+b²)=4a²-8ab+4b²-a²-2ab-b²=3a²-10ab+3b²