Question

2. Resolva as equações abaixo:

a) 9x 15=32
b) 2x-3=5x-6
c) 10 (3x-1)=-40​

Answer 1

Resposta:

A) $x=\sqrt[15]{\frac{32}{9}}$

B) $x=1$

C) $x=-1$

Explicação passo a passo:

A) $9x^{15}=32$

$\frac{9x^{15}}{9}=\frac{32}{9}$

$x^{15}=\frac{32}{9}$

$x=\sqrt[15]{\frac{32}{9}}$

B) $2x-3=5x-6$

$2x-3+3=5x-6+3$

$2x=5x-3$

$2x-5x=5x-3-5x$

$-3x=-3$

$\frac{-3x}{-3}=\frac{-3}{-3}$

$x=1$

C) $10\left(3x-1\right)=-40$

$\frac{10\left(3x-1\right)}{10}=\frac{-40}{10}$

$3x-1=-4$

$3x-1+1=-4+1$

$3x=-3$

$\frac{3x}{3}=\frac{-3}{3}$

$x=-1$