$1-r^2cos\left(x\right)^2+r^2sin\left(x\right)^2$
$\int\:z^3e^2dz$
$400p^6-256q^4$
$8x^2+9x+1$
$\int\frac{3x^3-9x^2-30x-11}{\left(x^2-3x-10\right)}dx$
$\int\left(x^4+x^3\right)e^{3x}dx$
$\left(\frac{x}{2}+2x^2\right)^2$
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