Question

-2x²+10x=0 ? Qual o cálculo e a resposta?

Answer 1

- 2x² + 10x = 0
x(-2x + 10) = 0
x = 0

- 2x + 10 = 0
- 2x = - 10 (- 1)
2x = 10
x = 10/2
x = 5

R.: x = 0 e x = 5