$\left(7-y\right)\left(2x+y\right)$
$-\:1\:+\:1\:+\:1\:-\:1$
$\int\frac{x}{\sqrt{a+bx}}\:dx$
$\frac{16}{8}x+\frac{3}{8}x-\frac{7}{8}x$
$\left(5f^2-3g^2\right)^2$
$\left(a+9\right)\left(a-v\right)$
$n^2-9n+20$
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