$2x^2+x+0.5^2$

$23+51-2^2$

$\frac{1-\sin^2x}{\sin^2x}=\cot^2x$

$y^2+x^2y=0$

$\left(1-cos^{\left(2\right)}x\right)sec^{\left(2\right)}x=tan^{\left(2\right)}x$

$10.6+10.6+10.6+10.6+10.7+10.8+10.9+10.9+10.9+11.0+11.1+11.1+11.3+11.3+11.3+11.3$

$2x^2zy^3;\:x=1;\:y=3;\:z=2$