$\cos^{2}\left(180-x\right)-\frac{1}{4}=0$

$10+\left|5+2+\left(7-1\right)\right|$

$-6.5-7$

$\left(-3\right)^3+14\left(2\right)-\left(-2\right)$

$-8\:x^{10}y^7+2\:x^6\:y^5$

$4x^2\:+\:\:16x\:+\:49$

$\int_{\frac{\pi}{2}}^{\frac{\pi}{2}}\left(\frac{\sin\sqrt{x}\cos\sqrt{x}}{\sqrt{x}}\right)dx$