What is the answer to 2|x+1|=8 ?

The answer to 2|x+1|=8 is x=-5\lor x=3

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2|x+1|=8

2 ∣ x + 1 ∣ = 8

x = - 5 or x = 3

Solution steps

2 ∣ x + 1 ∣ = 8

Divide both sides by

2

∣ x + 1 ∣ = 4

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

x + 1 = - 4 or x + 1 = 4

x + 1 = - 4 or x + 1 = 4

x = - 5 or x = 3

64 x^{2} - 36 y^{2}

(\frac{1}{9})^{0}

3 (x - 1) (x + 2) = 0

4 x^{2} + 10 x + 13 = 0

1 - 3 x + 1 \leq 2 - 2 x - x