$60s^2-85s-35=0$

$\left(5x-3\right)\left(x-1\right)$

$\sqrt{\frac{1}{\csc\left(\frac{m+n}{2}\right)^2}+\frac{1}{\sec\left(\frac{m+n}{2}\right)^2}\:+\:3}$

$3x^3-9x^2+6x$

$x^2-3x+5=0$

$-\frac{1890}{5}$

$\int\sin\left(10x\right)\cdot\sin\left(20x\right)\cdot\sin\left(30x\right)dx$