$x^2-4x+2\le\:0$

$\int\left(\sqrt{1+\frac{y^2}{49-y^2}}\right)dx$

$\left(am^4-am-2a\right).\left(am+a\right)$

$\int\left(18x^3-12\right)\csc^2\left(3x^4-8x-3\right)dx$

$\frac{x^5+x^3-8x-6}{x+2}$

$1000\left(1+0.06\right)^4$

$\int\left(\frac{26}{x^2\sqrt{x^2+16}}\right)dx$