Question

equacao do 2 grau x(x-3)=5x por favor me ajudem a resolver ????

Answer 1

x.(x - 3) = 5x

x² - 3x = 5x
x² - 3x - 5x = 0
x² - 8x = 0


x.(x - 8) = 0
x = 0

x - 8 = 0
x = 8


S={ 0, 8 }