$\int\frac{1-x+\sqrt{x}}{\sqrt{x}}dx$
$x^2-22-121$
$\left(-7\:a^5c^2\right)\left(2\:a^4bc^6\right)$
$2x+3\left(5x+2\:\right)$
$\frac{x^7+2x^3-4x+5}{x-2}$
$\frac{dy}{dx}=x\left(x^2+9\right)^{0.5}$
$-8\left(-s+-9\right)+9s$
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