$3\cdot5^2+4\cdot5+5$
$7-\left(-9\right)-18+\left(-19\right)+18$
$\left(\frac{1}{10}f^4v^5w\right)^2\left(-\frac{5}{2}fv^7wf\right)$
$\frac{x^6+y^9}{x^2+y^3}$
$x+2\sqrt{2xy}+2y$
$-x^2+8x+16$
$4w^2+4w+1=121$
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