$2\frac{d^2y}{dx^2}-4\frac{dy}{dx}+2y=2x$

$\left(1^22\right)-3$

$\left(-9\cdot a\cdot b^2\right)^{\frac{3}{11}}$

$f\left(x\right)=\pi x^2+8x$

$\csc\left(x-\frac{\pi}{2}\right)$

$cot\left(x\right)-csc\left(x\right)=-\frac{sin\left(x\right)}{1+cos\left(x\right)}$

$5-\left(-2^2\right)$