$x^4-4x+3$
$\int\sin\left(6x\right)^3\cos\left(6x\right)dx$
$3^0-3^4\cdot3^{-5}$
$4x^2-2x+3\:for\:x=-2$
$y^4+9y^2+25$
$x^2-18x+4$
$-6m+8n+5-m-m-6m-1$
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