Question

(a)
$(a + 5) {}^{2}$
use a regularidade que você estudou e indique a conta e resolva​

Answer 1

$\boxed{\begin{array}{l}\underline{\rm Quadrado~da~soma~de~dois~termos}\\\sf \huge\boxed{\boxed{\boxed{\boxed{\sf (a+b)^2=a^2+2ab+b^2}}}}\\\\\sf (a+5)^2=a^2+2\cdot a\cdot 5+5^2\\\\\sf (a+5)^2=a^2+10a+25\end{array}}$