Question 1112559
{{{k^4}}}
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If {{{k^2=k+5}}}, then {{{(k^2)^2=k^4=(k+5)^2=highlight_green(k^2+10k+25)}}}.



{{{k^3}}}?

If {{{k^2=k+5}}}, then {{{k=k^2-5}}}.
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{{{k^3=(k^2-5)^3}}}
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