$\frac{dy}{dx}=\left(-2\right)yln\left(\frac{y}{7}\right)$

$7\left(x+3\right)-2\left(x-2\right)$

$\lim_{x\to\frac{1}{2}}\left(\frac{2x^2+5x-3}{6x^2+8x-2}\right)$

$\int\left(6x+5\right)\left(3x^2+5x+4\right)^7dx$

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

$\left(2c+d\right)\left(4c^2-2cd+d^2\right)\left(8c^3-d^3\right)$

$\lim_{x\to0}\left(1-x^2\right)^{\frac{1}{x}}$