Question

resolver a equacao x2+3x=0

Answer 1

Se for 2x é:

2x + 3x = 0
5x = 0
x = 0/5
x = 0

Se for x² é:
x² + 3x = 0
x (x + 3) = 0
x' = 0
x + 3 = 0
x" = -3