Плиз решите (a-4)^2-2(a-4)(a+4)+(a+4)^2

[latex](a-4)^2-2(a-4)(a+4)+(a+4)^2=(a-4-(a+4))^2=\\=(a-4-a-4))^2=(-8)^2=64[/latex]

=а²-8а+16-2а²-8а+8а+32+а²+8а+16=64