$x^2+x-1=1$

$\sqrt{45x^3}$

$\frac{d^2}{dx^2}\left(f^3\left(x\right)\right)$

$\frac{\left(a^4-a^3\right)}{a}$

$\left(-5x^2y^3\right)\left(3xy^{-2}\right)$

$\int_0^{\frac{\pi}{4}}\frac{\left(1+\tan\left(x\right)\right)^2}{cos^2x}dx$

$\lim_{x\to-11}\left(\frac{t+11}{\sqrt{4t+80}-\sqrt{3t+69}}\right)$