$\int\frac{2x-3}{\sqrt[2]{4x^2-8x+20}}dx$

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

$-5-\left(-15\right)$

$\left(1-\cos^2x\right)\sec\left(x\right)=\sin^2x\sec\left(x\right)$

$\left(-3\right)-\left(-16\right):\left(-8\right)$

$16^{-2}\cdot4^3$

$10x^2+9x-9$