$4\tan\left(x\right)\sin\left(x\right)=-9\sin\left(x\right)$

$49c^2\:-\:28c\:+\:4$

$y=\frac{\theta^{3}\cos\theta}{\left(\theta+5\right)^{2}}$

$\left(x+1\right)\left(x^2-x+1\right)\left(x^6-x^3+1\right)$

$\log\left(x\right)+\log\left(x+3\right)=1+\log\left(4\right)$

$-2+5x^3+3y^2+4x-7+3-5x^3$

$86-527$