$-\left(-3-5+6\right)-3+6-\left(-2\right)\cdot\:6+\left(-3\right)$

$7a^2+5a-3=0$

$\left(6\right)\left(20\right)$

$\left(1-g\right)^2$

$\sqrt{25y^6}$

$\int\left(\frac{d}{\left(\cos^2\left(f\right)\right)\sqrt{1+\tan\left(f\right)}}\right)$

$\frac{d}{dy}\left(\ln\left(\frac{\left(1-y\right)\left(1+x\right)}{\left(1+y\right)\left(1-x\right)}\right)\right)$