$\sqrt{2\sin\left(x\right)}+1=0$

$\lim_{x\to0}\left(\frac{e^{-5x}sin\left(-4x\right)}{-x}\right)$

$\left(9n^4\:+\:4m\right)^2\:$

$\int\left(12x+9\right)\left(6x^2+9x-14\right)dx$

$3x^2-4xy+4x^2+3xy$

$\int\left(sec\left(40w\right)tan\left(40w\right)\right)dw$

$\int\left(\frac{1}{x^{\frac{4}{3}}}\right)dx$