$\left(9x+10\right)\left(9x-6\right)$

$\sin\left(90-y\right)+\sin\left(y\right)=\frac{\sqrt{6}}{2}$

$\left(\frac{\cos\left(x\right)}{\sec\left(x\right)}\right)+\cos^2\left(x\right)$

$\int\left(40-\frac{2}{\sec\phi}\right)d\phi$

$\int_1^e\left(\sqrt{2}\right)dx$

$\lim_{n\to0}\left(\frac{e^{x+n}-e^x}{n}\right)$

$10x^{5n}+25+5$