$\int\left(10-4x\right)\left(e^{x^2-5x+5}\right)dx$

$\int_1^224x^7-36x^5+25x^4-2x\:dx$

$\sec^20\cos^20=1$

$\lim_{x\to\infty}\left(\frac{\sqrt{25-3t}-5}{t}\right)$

$\int x\left(3x^4+50\right)dx$

$\left(x^3+1\right)e^{2x+4}$

$\cos\left(x\right)\left(2\cos\left(x\right)+1\right)=3$