$\cos^2x+3\sin^2x-3$
$g^2+9g-36$
$\left(2x^4+3xy^2z^4\right)^4$
$\frac{1}{i\left(i-1\right)}$
$\left(3x^2-5x+1\right)+\left(x^2-7w-3\right)$
$36k^2-1$
$\frac{x^3+5x^2-3x+1}{x+2}$
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