$\lim_{x\to0}\left(\frac{8x^4+7\sqrt{x}}{6x^4-8x^{-1}}\right)$

$f\left(x\right)=x^2sin\left(x\right)+x\cos\left(x\right)$

$\frac{a+7}{56}=\frac{14+a}{7}$

$2x-7<-x$

$\left(\left(\frac{45.02171}{18.17}\right)-1\right)\cdot100$

$\int5\left(lnx\right)^2dx$

$14\sin\left(m\right)\cos\left(m\right)=-4\sin\left(m\right)$