Question

3x²-12x=0 bternha as raizes reais das equaçoes a seguir

Answer 1

$Resolu\c{c}\~ao\to \left\{\begin{array}{ccc}3x^2-12x=0\\\\3x*(x-4)=0\\\\3x = 0\\x=0\\\\x-4=0\\x=4\\\\S=\{0,4\}\end{array}\right$

Espero ter ajudado. :))