Question

3 vezes rais quadrada de 16 menos 9 mais 80

Answer 1

→Lembrete:

⇒$\sqrt[b]{a^c}=a^{\frac{c}{b}}$
⇒$a^0=1$
==========
$\left(3\cdot \sqrt{16}\right)-9+8^0\\\left(3\cdot \sqrt{4\cdot 4}\right)-9+1\\\left(3\cdot \sqrt{4^2}\right)-8\\\left(3\cdot 4^{\frac{2}{2}}\right)-8\\\left(3\cdot 4\right)-8\\12-8\\\boxed{\bold{4}}$