Question

Resolva as equações a seguir:
a) 3x ( x + 2) = 0
b) x (2x + 5) = 2x
c) 5x² – 10x = 0
d) 3x² – 7x = x(2x – 4)
e) 9x² = 54x
f) (x – 5)(x – 6) = 30 g) x (x + 2) = 2x + 25

Answer 1

a) {-2;0}
b) {-3/2;0}
c) {0;2}
d) {0;3}
e) {0:6}