$\left(2+\sqrt{5}i\right)^3$
$\left(5a+1\right)^2-\left(3a-2\right)^2$
$\frac{6x^4+3x^3-2x^2+9x+2}{2x+1}$
$\frac{dy}{dx}=x^2\cdot sen\left(2y\right)$
$5x\:+\:3y\:+\:5\:+7a\:-\:3x\:-\:2y\:+\:3\:$
$-33\cdot56\cdot12$
$4\sec\left(2x\right)-3=8$
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