$\int\frac{2^{-\frac{1}{2}}}{\sqrt{x}}dx$

$\left(0.5-2y\right)\left(0.5-2y\right)$

$\int\frac{5\left(1-\cos\left(x\right)^2\right)\sin\left(x\right)}{\left(1+\cos\left(x\right)\right)\left(1-\cos\left(x\right)\right)}dx$

$\int_0^{3\pi}\left(x^2sin\left(\frac{1}{3}x\right)\right)dx$

$60-4x=x^2$

$945:27$

$\left(-27\right)\:\frac{4}{3}$