What is the answer to |2x+5|=11 ?

The answer to |2x+5|=11 is x=-8\lor x=3

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|2x+5|=11

∣ 2 x + 5 ∣ = 11

x = - 8 or x = 3

Solution steps

∣ 2 x + 5 ∣ = 11

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

2 x + 5 = - 11 or 2 x + 5 = 11

2 x + 5 = - 11 or 2 x + 5 = 11

x = - 8 or x = 3

x^{3} - 4 x^{2} - 9 x + 36 > 0

4 x^{2} + x - 1 = 0

\frac{5}{27} + \frac{1}{6}

\frac{2}{5} + \frac{4}{7}

5 x^{2} + 15 x + 10