Question

5x ao quadrado +7x =3x ao quadrado +2x​

Answer 1

5x² + 7x = 3x² + 2x

5x² - 3x² + 7x - 2x = 0

2x² + 5x = 0

x.(2x + 5) = 0

x' = 0

2x + 5 = 0

2x = -5

x = -5/2

x'' = -5/2