$\int\frac{\left(3x^2\right)}{\sqrt{9-x^2}}dx$

$\int\left(16x^2-9\right)\left(x^2\right)dx$

$\left(-x^2y\right)-\left(\frac{2}{3}x^m\right)\left(-\frac{3}{4}a^2y^n\right)$

$418-\left(-56\right)$

$\int\left(\frac{8}{x}-\frac{5}{x^2}+\frac{6}{x^3}\right)dx$

$6,728\:-\:3,125\:+\:9,307\:$

$2x^2-6=0$