$\frac{\sec\left(a\right)}{\sec\left(a\right)}-\frac{\cos\left(a\right)}{\sec\left(a\right)}$

$\left(\frac{1}{5}x-\frac{1}{2}\right)^3$

$5\left(4m+4\right)+3\left(2m+6\right)$

$p^2+4p=5$

$16a+20$

$-18\left(5x^3-13x^2-36x+36\right)$

$\int_{1.5}^3\left(\frac{1}{4-3x}\right)dx$