$144x^2-72x+36$
$27\sqrt{2}-17\sqrt{2}$
$9x^2-40x+25$
$9a^2+72ab+114b^2$
$\int\frac{1}{x\left(1+lnx\right)^3}dx$
$\frac{3}{4}\int\left(\sin9x\right)dx$
$-x^2+6x+3^2$
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