Question

3(x² - 1x) = 24x me ajudem ai

Answer 1

Resposta:

$3\left(x^2-1\cdot \:x\right)=24x\\\\\mathrm{Subtrair\:}24x\mathrm{\:de\:ambos\:os\:lados}\\\\3\left(x^2-1\cdot \:x\right)-24x=24x-24x\\\\3\left(x^2-1\cdot \:x\right)-24x=0\\\\3x\left(x-9\right)=0\\\\\mathrm{Usando\:o\:principio\:do\:fator\:zero:\quad \:Se}\:ab=0\:\mathrm{entao}\:a=0\:\mathrm{ou}\:b=0\\\\x=0\\\\\:x=9$