$\left(a^2-26\right)^3$

$y=-4\sin\left(\frac{1}{10}x\right)$

$\int45x^2\left(5x^3-3\right)^4dx$

$\lim_{x\to3}\left(\frac{10x^2+50x}{x^2-25}\right)$

$\int\left(\sqrt[3]{sin\left(3\right)}\right)\cdot\cos^3\left(3x\right)dx$

$\int\frac{x+5}{x^3-6x^2+9x}dx$

$x^2-\:x+1\ge0$