$\left(r-54\right)\left(r+1\right)$
$\left(sin\left(x\right)-1\right)\left(-2sin\left(x\right)\right)\left(sin\left(x\right)-1\right)+\left(-cos^2\left(x\right)\right)$
$24x^2+26+9$
$x^3+4^2-3x+8$
$25x^{8\:}-70x^6+30x^5+49x^4-42x^3+9x^2$
$\left(x-3m+8\right)^2$
$\frac{2sinh\left(3x^4\right)}{8\sqrt{x}}$
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