$\int14\left(5x-1\right)sin\left(-x\right)dx$

$14x\left(-3\right)$

$\left(\frac{1}{2}v-3y\right)^{2}$

$\left(m\:^3\:-\:n^4\:\:\right)\:^2$

$\left(x^a^{+2}+y^{n-1}\right)^2$

$\left(\frac{2}{3}a\frac{2}{5}b\right)^2$

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