$2\left(7\:-\:x\right)\:-\:2\left(x\:+\:3\right)\:=\:3\left(2x\:-\:1\right)\:-\:29$

$8\left(5x-3\right)$

$18\cdot18\cdot18\cdot18\cdot18$

$\int\frac{7x^2-15x-1}{\left(x-4\right)\left(x^2+1\right)}dx$

$\int_{\frac{\pi}{4}}^{\frac{\pi}{4}}\left(\sin^2\left(x\right)\cos^2\left(x\right)\right)dx$

$a^3+2a-a^2$

$\frac{a-25}{a}\cdot\frac{a+2}{a^{2}-3a-10}$