Question

valornumerico da expressao numerica 2bao quadrado mais oito parab igual a meno tres e

Answer 1

$\large\boxed{\begin{array}{l}\sf Qual\,o\,valor\,num\acute erico\,da\,express\tilde ao\,num\acute erica\\\sf 2b^2+8~para~b=-3?\\\underline{\sf Soluc_{\!\!,}\tilde ao\!:}\\\\\rm 2b^2+8\bigg|_{b=-3}=2\cdot(-3)^2+8\\\\\rm 2b^2+8\bigg|_{b=-3}=2\cdot9+8\\\\\rm 2b^2+8\bigg|_{b=-3}=18+8\\\\\rm 2b^2+8\bigg|_{b=-3}=26\end{array}}$