Question

$a) \: (x + 12) {}^{2}$

$b) \: (x - 8) {}^{2}$


$c) \: (x + 9)(x - 9)$
$d) \: (x + 7)(x - 3)$
​

Answer 1

$\\\mathtt{a)}~\mathsf{(x+12)^2=x^2+24x+144}\\\mathtt{b)}~\mathsf{(x-8)^2=x^2-16x+64}\\\mathtt{c)}~\mathsf{(x+9)(x-9)=x^2-81}\\\mathtt{d)}~\mathsf{(x+7)(x-7)=x^2-49}$