Question

Resolva as equações d 2º grau incompletas:

a)2x²+6x=0

b)5x²-50x=0

Answer 1

Vamos lá! a) 2x^2 + 6x = 0 2x . (x + 3) = 0 2x = 0 x = 0/2 x = 0 x + 3 = 0 x = -3 S = {0,-3} b) 5x^2 - 50x =0 5x . (x - 10) = 0 5x = 0 x = 0/5 x = 0 x - 10 = 0 x = 10 S = {0,10}