$\frac{2x}{\left(3x+2\right)\left(x-3\right)}-\frac{5x}{\left(3x+2\right)\left(x+4\right)}$

$\left(\frac{3}{4}+y\right)\left(\frac{3}{4}-y\right)$

$\int\frac{1}{\sqrt{49+9x^2}}dx$

$5y+34=-2\left(-7y+1\right)$

$\left(-111\right)\cdot\left(-89\right)+111$

$\int\sqrt{e^{x}-1}dx$

$\int\frac{e^{9x}}{e^{9x}+3}dx$