$\left(1^4-1^4\right)\left(61+34\right)$

$\sqrt[6]{x^{15}}$

$\frac{4x^3+16x^2+6x+12}{4x^2+6}$

$\left(x-5\right)\left(x^2+2\right)-x^3+5x\left(x+2\right)-10\left(x-1\right)$

$23x^2\cdot x$

$\lim_{x\to\infty}\left(1+\frac{7}{x}\right)^{\frac{x}{11}}$

$y=7\left(5^{\sqrt{x}}-\frac{3}{x}\right)^6$