$a^{0}\cdota^{b}$

$\lim_{x\to-\infty}\:\frac{5^x}{3^x+2^x}$

$\int_0^1\left(\sqrt{1+t^2}\right)dt$

$8x^2-7x+15$

$\left(9a^2-4b^5\right)^3$

$6\left(-\frac{3}{2}\right)+4\left(-\frac{3}{2}\right)+3$

$\frac{\sec\left(x\right)-1}{\tan\left(x\right)}=\frac{\tan\left(x\right)}{\sec\left(x\right)-1}$