$\lim_{x\to5}\left(\frac{\left(x^2-25\right)}{x^2-10x+25}\right)$

$\int\left(x-1\right)^5e^{4x}dx$

$-7x\left(-4y^2\right)+6y^3\left(5x+1\right)$

$\left(x-26\right)^2$

$\left(\frac{1}{3}n+\frac{4}{1}\right)$

$\lim_{x\to0}\left(\sqrt{\frac{\sqrt{x+2}-\sqrt{2}}{x}}\right)$

$15a^32b^2c^4$