$3x^2+3x-18$
$\frac{a+1}{b}=\frac{a-1}{b}+\frac{b+1}{a}$
$\cos^2x\cdot1$
$\frac{2x-1}{x+1}\le1$
$\frac{1\:+\:cos\:x}{1+sec\:x}$
$a\:^5\:+5a\:^4\:b+10a\:^3\:b\:^2\:+10a\:^2\:b\:^3\:+5ab\:^4\:+b\:^5$
$\int\frac{w^3-2w}{w+1}dx$
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