$\left(2x-3\right)\left(3x-2\right)>0$
$\int\left(\left(7x+1\right)\cdot\sqrt{9x+1}\right)dx$
$\left(4x+9\right)\left(4x-12\right)$
$8-7\cdot3$
$\left(ab+4\right)\left(ab-6\right)$
$8.8^2$
$\frac{2}{\sec\left(x\right)}-\sec\left(x\right)$
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