Question

5×ao quadrado menos × = 0

Answer 1

5 x² - x = 0
x(5 x - 1 ) = 0
x = 0
5 x - 1 = 0
5 x = 1
x = 1/5
S = {0 , 1/5}

Answer 2

5x² - x = 0
x(5x - 1) = 0
x = 0 ou 5x - 1 = 0
=> 5x = 1 => x = 1/5