Question

4 x(x-4)=x preciso de ajuda equaçao de 2 grau prff

Answer 1

Olá Alda,

$4x(x-4)=x\\ 4x^2-16x=x\\ 4x^2-16x-x=0\\ 4x^2-17x=0\\ x(4x-17)=0\\\\ x'=0~~~~~4x-17=0\\ ~~~~~~~~~~~~~~4x=17\\\\ ~~~~~~~~~~~~~~~x''= \dfrac{17}{4}\\\\\\ \Large\boxed{S=\left\{0, ~\dfrac{17}{4}\right\}}$

Tenha ótimos estudos ;D