$\int e^{-am}\cdot\sin2mdm$

$5\sqrt{7}-3\sqrt{7}+4\sqrt{7}+2\sqrt{7}-\sqrt{7}$

$\frac{\left(x^2+4\right)}{\left(x^3+9x\right)}$

$4\cdot\left(5+1\right)^2-2\cdot\left(-3\right)^2$

$\left(-18\right)-5-\left(-93\right)$

$-30\cdot\left|6-\left(-15\right)+\left(-9\right)-\left(-24\right)\right|$

$\frac{\frac{\left(1-\sin\left(x\right)^2\right)\csc\left(x\right)}{\sin\left(x\right)}}{\cot\left(x\right)}\:$