$x^2+30x+225$

$\int4.7^{4x-9}dx$

$y'=\frac{y-1}{x}$

$\left(\frac{y}{6}-1\right)^2$

$\lim_{x\to\infty}\left(a\cdot\frac{\left(.5m\right)\left(v-u\right)^2}{x\cdot t}\right)^{\left(-x-1\right)}$

$8\cos^2\left(x\right)-8\sin^2\left(x\right)$

$5x^2\:+\:15x\:+\:10\:=\:0\:\:$