Question

Resolva as equações abaixo a).
|X 6|
|3 5|=6
b)
|X X+1|
|5 6 |= 0
C)
|X X-1|
|4 X |= 0

Answer 1

lX 6|
|3 5|=6
5x-18=6
5x = 24 ==> x=24/5

b)
|X X+1|
|5 6 |= 0
6x - 5(x+1) =0
6x -5x-5= 0 ==> x=5


C)
|X X-1|
|4 X |= 0
x² -4(x-1) =0
x² -4x +4 = 0
(x -2)² = 0 ==> x=2