$2\frac{dy}{dx}+3y=7$
$\frac{1+5^n}{9^n}$
$x^5-5x^3-6x=0$
$2\left(x-3\right)\:-\:\left(2x-17\right)$
$4x^2-12x+9=10$
$\frac{x^4-2x^3-13x^2-10x+24}{x+3}\:$
$\frac{x^2-28}{x-2}$
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