$4x^2+9y^2+16x-18y-11=0$
$60xw+70w$
$-2b^2+b^2+3b-b$
$\frac{x^2+3x+11}{x+1}$
$1+\left(1+\tan\left(25\right)\right)\left(1+\tan\left(20\right)\right)$
$\int_2^4\left(\frac{\left(3x-6\right)}{2}\right)dx$
$x+7=10$
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