$\left(2x^4-4x^2\right)$
$x^2+11x+11$
$3a\left(3\right)-a^2$
$\arcsin\left(\frac{\cos\left(x\right)}{\sqrt{2\left(1+\sin\left(x\right)\right)}}\right)$
$y^2=8un$
$6x^2+5x+8$
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