$-8\cdot3+\left(10\cdot2\right)$
$x^2+bx+x$
$\frac{sec\left(x\right)-csc\left(x\right)}{sec\left(x\right)+csc\left(x\right)}$
$\lim_{x\to0}\left(\frac{e^x-e^{sinx}}{x-sinx}\right)$
$w^4-8w^2-9$
$x^2+10\cdot x+25\cdot x^2+10\cdot x+25$
$14x+2x-5y-4y$
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