$5=\left(-8\right)$

$2x+2-8x-3$

$\left(b^2+5\right)\left(b^2+2\right)$

$\left|-6\right|-\left|4-7\right|$

$25\sec^2\left(5x\right)-5\tan\left(5x\right)^2=25$

$\frac{\sqrt{1+\left(\frac{x}{y}\right)^2}+1}{\frac{x^2}{y}}$

$\int\frac{\left(\sqrt{x}+2\right)\left(\sqrt[3]{x}+x\right)}{\sqrt{x}}dx$