$22-\left(12+8\right)$

$\int\frac{2x^3-9x+6}{\left(x-1\right)^2\left(x-3\right)\left(x-4\right)}dx$

$3^{5x-1}=27^{4x+2}$

$\left|19\cdot\left(-2\right)\right|\cdot16$

$\frac{3}{5}\log\left(x+y\right)-\frac{6}{5}\log\left(x-y\right)-2+3\log\left(x+y\right)$

$4y^2-8$

$y=\frac{6}{5}-\frac{6}{5}e^{-20x}$