$\frac{7.44}{\left(-0.8\right)}$

$40-9x+4x+5$

$pq-3p+7q+12p-15q+3pq$

$\frac{8\cos\left(x\right)+4cos^2\left(x\right)sin\left(x\right)}{sin\left(x\right)}\:x\:\frac{sin^2\left(x\right)}{1}$

$\lim_{x\to1}\left(\frac{\ln2x^2-1}{\tan\left(x-1\right)}\right)$

$9 = 3$