Question

( - 3 ) ² × 7 + ( - 3 )
-------------------------
( - 3 ) - 7 ​

Answer 1

Resposta:

$\textsf{Leia abaixo}$

Explicação passo-a-passo:

$\mathsf{\dfrac{(-3)^2\cdot7+(-3)}{(-3)-7}=\dfrac{3^2\cdot7\cdot(-3)}{(-3)-7} }$

$\mathsf{\dfrac{(-3)^2\cdot7+(-3)}{(-3)-7}=\dfrac{3^2\cdot7-3}{(-3)-7} }$

$\mathsf{\dfrac{(-3)^2\cdot7+(-3)}{(-3)-7}=\dfrac{3^2\cdot7-3}{-3-7} }$

$\mathsf{\dfrac{(-3)^2\cdot7+(-3)}{(-3)-7}=\dfrac{ 9\cdot7-3}{-10}}$

$\mathsf{\dfrac{(-3)^2\cdot7+(-3)}{(-3)-7}= \dfrac{63-3}{-10}}$

$\mathsf{\dfrac{(-3)^2\cdot7+(-3)}{(-3)-7}=\dfrac{60}{-10} }$

$\boxed{\boxed{\mathsf{\dfrac{(-3)^2\cdot7+(-3)}{(-3)-7}=-6}} }$