$x+x^4$
$6x^4+11\:x^3-30\:x^2-29x-6$
$\frac{1}{2^{-6}}$
$-3m+\:4;\:m=1$
$\left(2x-5h\right)^4$
$\left(4b^4+3c\right)^4$
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