$\left(-3x+9\right)^2$
$\left(1+\frac{1}{n}\right)^{n^2}$
$\cos\left(2x\right)=1+4\cdot\sin\left(2x\right)$
$1.4918\cdot0.00008533$
$\frac{\left(10a^3-31a^2b+ab^235b^3\right)}{2a-5b}$
$\left(r+11\right)\left(r-11\right)$
$85x^3+364x^2+509x+242$
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