$2\sin^2\left(-x\right)=1-\cos\left(2x\right)$

$10+x<6$

$\left(a^2-9a+18\right)\left(a^2-2a-3\right)$

$\frac{dy}{dt}=-0.06\sqrt{y}$

$\left(\sin\left(x\right)+tan\left(x\right)\right)\left(\frac{\sin\left(x\right)}{1+\cos\left(x\right)}\right)$

$5^7$

$\frac{\partialy}{\partialx}=\left(x+1\right)^{2}$