Question

Determine a raiz da equação 2. (x-2) +5. (2-x) +6. (x+1)=0​

Answer 1

Resposta:

x=-4

Explicação passo-a-passo:

$2\left(x-2\right)+5\left(2-x\right)+6\left(x+1\right)=0\\3x+12=0\\3x+12-12=0-12\\3x=-12\\\\\frac{3x}{3}=\frac{-12}{3}\\\\x=-4$