Question

(a+3b)² podem me ajudar?​

Answer 1

$\Large\mathsf\displaystyle{}\left(a + 3b\right)^{2} \\\\ \Large\mathsf\displaystyle{} {a}^{2} + 2a\cdot3b + \left(3b\right)^{2} \\ \Large\mathsf\displaystyle{} {a}^{2} + 6ab + \left(3b\right)^{2} \\ \Large\displaystyle\text{ \begin{gathered} \underline{\boxed{\boldsymbol{ {a}^{2} + 6ab + 9 {b}^{2} }}}\end{gathered} }$

$\displaystyle\text{ \begin{gathered} \underline{\boxed{\boldsymbol{{ \red{Bons}} \blue{\:Estudos}}}}\end{gathered} }$