$\frac { 2 } { 3 } + \frac { 1 } { 3 }$
$\int u^{-\frac{1}{2}}du$
$\int\frac{16x+14}{4x^2+7x+12}dx$
$-x^2+2x=-14$
$-40\left(\frac{2}{3}\right)^x+25$
$3\left(3x^2-5x-2\right)^2-5\left(3x^2-5x-2\right)-2$
$\int\frac{32}{x^2}dx$
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