$\int3x^2sen\left(x^3+1\right)\:dx$
$\ln\left(e^x\sqrt{x}\right)$
$\int\frac{1}{z^2\sqrt{1+2z}}dz$
$\left(a-b\right)^2=\:a^2-2ab+b^2$
$\left(3+5i\right)\left(4+4\sqrt{3i}\right)$
$x^3+2x^2-4x$
$7x+2=4x+23$
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