Question

desenvolva os seguintes quadrados da diferença
a) (x-7)²
b ) (x²-6²)
c) (x²-y²)²
d) (3y+7)²
e) (x²-1²)
f) (x³-2)²​

Answer 1

$\Large\boxed{\begin{array}{l}\rm a)~\sf(x-7)^3=x^2-14x+49\\\rm b)~\sf(x^2-6^2)=x^2-36\\\rm c)~\sf (x^2-y^2)^2=x^4-2x^2y^2+y^4\\\rm d)~\sf(3y+7)^2=9y^2-42y+49\\\rm e)~\sf(x^2-1^2)=x^2-1\\\rm f)~\sf(x^3-2)^2=x^6-4x^3+4\end{array}}$