$2^{15}\cdot2^{-9}$

$3x^2-2x\ge2x^2+15$

$7x^2+29x-36$

$\frac{\sec\left(x\right)\cdot\cot\left(x\right)-\sin\left(x\right)}{\csc\left(x\right)\cdot\cos\left(x\right)}$

$\frac{a^2-36}{a+6}$

$\lim_{x\to0}\left(\frac{\sqrt{\left(x+a\right)}-\sqrt{a}}{x}\right)$

$x^2+25x+24$