Question 894415

(8+x)^-3=64
<pre>
{{{(8 + x)^- 3 = 64}}}
{{{(8 + x)^- 3 = 4^3}}}
{{{(8 + x)^(- 3 * (- 1/3)) = (4^3)^(- 1/3)}}} ------ Raising each side to the {{{- 1/3}}} power
{{{8 + x = 4^(- 1)}}}
{{{8 + x = 1/4}}}
32 + 4x = 1 ------- Multiplying by LCD, 4
4x = 1 – 32
{{{highlight_green(highlight_green(x = - 31/4))}}}
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