$-22\:-\:26\:-\:\left(-7\right)$
$\left(3x+4y+2z^2\right)^2$
$49x^2-8x+4$
$\left(2y^2.\:4y^2.\:y\right)^3$
$\int x^2u^xdx$
$\left(\sqrt{n^2+1}+1\right)\left(\sqrt{n^2+1}-1\right)$
$\left(3\right)\left(5\right)-\left(1\right)\left(3\right)$
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