$5t^2+15t-90$
$\left(x^2+b\right)^7$
$\int^ize^zdz$
$\frac{2x+3}{\:5x}\le1$
$\int\left(\frac{2x+4}{\sqrt{4x-x^2}}\right)dx$
$60\cdot840$
$\int\:\left(x^{3\:}\sqrt{x^2+5}\right)\cdot\:\:dx$
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