$tan^2x+4tanx-5=0$
$490b^4-160b^2$
$\left(\frac{x^a}{y^{b-a}}+\frac{y^b}{x}\right)^b$
$13+7x-10y-5$
$\int9t\:cos\left(t\right)dt$
$\int\left(sec^2x-1\right)sec\left(x\right)\:tan\left(x\right)dx$
$3x^2-18x+2$
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