$18y^2+24$
$\frac { 1 } { 3 x ^ { 2 } + x }$
$897\:+\:920$
$\frac{w^3-121w}{w^2-11w}$
$\int x^2sen\:bx\:dx$
$\int_0^1\left(\sqrt{4-y^2}\right)dy$
$42\cdot\left(-2\right)+\left(-7+16\right)\cdot\left(-12\right)-\left(55\right)$
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