Question

Resolva as equações modulares:

a) [x+1]=5
b)[2x+3]=0
c)[5x-1]=[1-3x]

Answer 1

Ola Romulo

|x + 1| = 5

x + 1 = 5
x = 4

x + 1 = -5
x = -6 

|2x + 3| = 0 

2x + 3 = 0
2x = -3
x = -3/2

|5x - 1| = |1 - 3x| 

(5x - 1)² = (1 - 3x)²

25x² - 10x + 1 = 9x² - 6x + 1

16x² - 4x = 0

4x² - x = 0

x(4x - 1) = 0

x1 = 0
x2 = 1/4

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