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in the third step, why does the x^4 change to x^2?, distributing divides the power in half?

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- Oct 22nd 2012, 07:11 PMkingsolomonsgraveanother question about limits at infinity
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in the third step, why does the x^4 change to x^2?, distributing divides the power in half? - Oct 22nd 2012, 07:51 PMProve ItRe: another question about limits at infinity