$\left(8x-5\right)x\left(15x+1\right)$

$\int\frac{\tan^{3}\left(x\right)\sec\left(x\right)}{\sqrt[5]{\sec\left(x\right)}}dx$

$\frac{d}{dx}\sqrt{5x^4-6x+1}$

$\int_0^{12}\left(x^3e^{-\frac{1}{3}x}\right)dx$

$400\:a^2\:-\:49$

$x^2-10x+215$

$\frac { 6 s t ^ { - 4 } } { 2 s ^ { - 2 } t ^ { 2 } }$