$\left(8+4i\right)+\left(10-2i\right)$
$x^4-6x^2+2$
$\int x^{-1}ln\left(2x\right)dx$
$-2\left(-9\right)$
$2x^2+3x+1,\:x=9$
$e^{-3\left(-\infty\right)^2}$
$-582-496$
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