Question 1071527
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Please help me to simplify:

sin^4X + sin^2Xcos^2X

thank you
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<pre>
{{{sin^4(x) + sin^2(x)*cos^2(x)}}} = {{{sin^2(x)*(sin^2(x) + cos^2(x))}}} = {{{sin^2(x)}}}.     ( <<<--- since sin^(x) + cos^2(x) = 1. )
</pre>