Question

1- Resolva as equações na forma incompleta❗❗❗

d)(×-3).(×+3)=2×-9??​

Answer 1

(x - 3) . (x + 3) = 2x - 9

x² + 3x - 3x - 9 = 2x - 9

x² + 3x - 3x - 2x - 9 + 9

x² - 2x = 0

x (x - 2) = 0

x = 0

x - 2 = 0

x = 0 + 2

x = 2