$\sqrt { 2 x + 5 } - 4 = 3$
$\left(2x^{-1}+2y^{-1}\right)^4$
$\frac{dy}{dc}+20y=24$
$4-\cos^2x=3+\sin^2x$
$40\left(-6\right).\:\left(6\right)$
$\int\left(x+1\right)\cdot\sqrt{2x+1}dx$
$\int_0^2\left(\frac{1}{\left(1+x^2\right)}\right)dx$
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