Question

Resolvendo a equação em R ,|-2x+6|=4,

Answer 1

| -2.x +6| = 4

-2.x +6 ≥ 0

-2.x ≥ -6

2.x ≤ 6

x ≤ 3

-2.x +6 = 4

-2.x = 4 -6

-2.x = -2

x = 1

-2.x +6 < 0

-2.x +6 < 0

-2.x < -6

2.x > 6

x > 3

-2.x +6 = -4

-2.x = -4 -6

-2.x = -10

x = 10/2

x = 5

 S = { 1, 5}

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