Question

qual o valor dessa conta 5.(x-1)=(x+4).(x+1)

Answer 1

Propriedade distributiva:

$5.(x-1)=(x+4).(x+1)\\\\\\ 5x-5 = x^2+x+4x+4\\\\\\ -x^2-5x+5x-5-4\\\\\ -x^2-9=0(-1)\\\\ x^2+9=0\\\\\\ x = +ou- \sqrt{-3} \\\\\ S={vazia}$