$-5.\left(-14\right)$
$\left(6h+5\right)+\left(4h+9\right)$
$x2-6x+32$
$\frac{630}{35}$
$\left(24-2x^2\right)^2$
$a^2+ab^2$
$2\cos^2x=7\cos-3$
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