$7x^2-y^2+9x^2-8y^2$
$\frac{3x-6}{2x+2}\ge3$
$9\cot^2\frac{1}{2}x=4$
$\left(-7\right)-\left(+8\right)+\left(-3\right)-\left(-9\right)$
$\frac{x^3-3x+7}{x^2-3}$
$\int e^x\sin\left(bx\right)dx$
$49m^2+14m+1$
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