$-\sqrt{x+3}-7=-4$
$5\cdot\left(-3\right)+\left(-6\right)\cdot4+\left(-3\right)\cdot\left(-7\right)$
$\left(9h^2-2h\right)^2$
$3\left(2x+3\right)\:and\:6x+3$
$5ab^2-5a$
$\int\left(\sqrt{2x^3}-\sqrt{x}\right)dx$
$16n^2\:40n\:+\:25$
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