$\frac{1}{\left(x^2-1\right)}+\frac{1}{\left(x+1\right)}$
$x^4+8x^2+9$
$\int_0^2\left(\left(x\right)^2ln\left(x\right)^2\right)dx$
$43-\left(-12\right)+\left(-8\right)-\left(-43\right)+7$
$\frac{z}{4}+7>-5$
$\left(4x+15\right)^2$
$\left(2i-3\right)^2\cdot i$
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