Solve the quadratic equation $\frac{669}{4}x^2-\frac{8058}{25}x+\frac{13907}{125}=0$

Find the derivative

$\frac{d}{dx}\left(x^6+2\right)^x$

Find the derivative

$\frac{d}{dx}\left(\left(x^2+3\right)^{5x-1}\right)$

Find the derivative

$\frac{d}{dx}\left(x-1\right)^{\cos\left(2x\right)}$

Find the derivative

$\frac{d}{dx}\left(x^{x-1}\right)$

Find the derivative

$\frac{d}{dx}\left(x+1\right)^x$

Find the derivative

$\frac{d}{dx}\left(tan^{9-7x}\left(x\right)\right)$

Find the derivative

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