What is the answer to |4x|=4 ?

The answer to |4x|=4 is x=-1\lor x=1

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|4x|=4

∣ 4 x ∣ = 4

x = - 1 or x = 1

Solution steps

∣ 4 x ∣ = 4

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

4 x = - 4 or 4 x = 4

4 x = - 4 or 4 x = 4

x = - 1 or x = 1

\frac{10 π}{3} + 4 π

x^{2} + (x + 3)^{2} = (x + 6)^{2}

\frac{5}{9} (a + 3) - a \geq \frac{4}{3} (a - 3) - 1

∣ 7 + 3 x ∣ = 0

\frac{( - 3 + 2 i )}{2 \cdot \frac{3}{2} + 7 i}