$150^2+140^2+130^2+90^2+80^2+70^2+60^2+70^2+110^2+100^2$

$-5x^4+20x^4$

$\int\frac{\sec\left(x\right)^5}{\csc\left(x\right)}dx$

$7x^5-\:2x^4\:+\:3x^2;\:x=2$

$\lim_{n\to5}\left(\sin\left(n\pi\right)\right)$

$\left(-3x^2+2y\right)^3$

$\int_{1000}^{1500}\left(x+100\right)dx$