Question

Aplicando a propriedade distributiva, calcule.
Resolva as operações no seu caderno e envie uma foto.
3x(-5 +2)
-4x (-6+9)

Answer 1

Resposta:

$3x(-5 +2)\\\\\mathrm{Somar/subtrair:}\:-5+2=-3\\\\=3\left(-3\right)x\\\\\mathrm{Remover\:os\:parenteses}:\quad \left(-a\right)=-a\\\\=-3x\cdot \:3\\\\\mathrm{Multiplicar\:os\:numeros:}\:3\cdot \:3=9\\\\=-9x\\\\\\\\-4x (-6+9)\\\\\mathrm{Somar/subtrair:}\:-6+9=3\\\\=-4\cdot \:3x\\\\\mathrm{Multiplicar\:os\:numeros:}\:4\cdot \:3=12\\\\=-12x$

Copie daqui para o caderno!