$5\cos^2x=3\left(1+\sin x\right)$

$x^2+7x-6=0$

$\int\frac{1}{2}t\cos\left(4\right)t^2dx$

$\cos\left(3x\right)=\frac{-\sqrt{2}}{2}$

$\left(-3\right)-\left(-16\right)\left(+8\right)$

$\left(2mny+2n-m+3\right)^2$

$\left(\frac{\left(x^2+1\right)}{x^2+2}\right)^{\left(\frac{1}{9}\right)}=y$