Question

Resolva as equações:

a) x² - 2x = 0

b) x² + 5x = 0

c) 3x² - x = 0

d) 2x² + x = 0

e) - x² + 4x = 0

f) - 2x² - 7x = 0

Answer 1

A) x(x-2)=o <=> x=0 ou x=2
B)x(x+5)=0 <=> x=0 ou x= -5
C)x(3x-1)=0 <=> x=0 ou x=1/3
D)x(2x+1)=0 <=> x=0 ou x= -1/2
E)x(-x+4)=0 <=> x=0 ou x= 4
F) x(-2x-7) <=> x=0 ou x=-7/2
Acho eu