$\int_1^{t^2}e^{x^2}dx$

$\int\left(2x-5\right)x^{\frac{4}{3}}dx$

$-19=x-19$

$18x^4y-9x^2z^2+36x^2y^4$

$\frac{d^{2}y\left(t\right)}{dt^{2}}+2\xi\omega_{n}\frac{dy\left(t\right)}{dt}+\omega_{n}^{2}y\left(t\right)=k\omega_{n}^{2}u\left(t\right)$

$3a-5b+4c-3a+7b+c$

$\left(-9\right)x\left(+8\right)$