Question

Me ajudem
2x2-4×=0
?????

Answer 1

2x² - 4x = 0
x.(2x - 4) = 0
x = 0

2x - 4 = 0
2x = 4
x = 4/2
x = 2

R.: x = 0 e x = 2

S: {0,2}