$\frac{4x^3-5x^2-2x+1}{x-1}$

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

$2\ln\left(2x\right)=-4$

$\left(1+7j\right)\left(5\right)$

$3\left(x^2-2yz+y^2\right)-4\left(x^2-y^2-3yz\right)-x^2+y^2$

$p\left(x\right)=6x^8\cdot ln\left(1-x\right)$

$\int\frac{\sqrt[3]{x}+3}{x}dx$