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    dejalisco5's Avatar
    dejalisco5 Posts: 7, Reputation: 1
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    #1

    May 14, 2008, 10:51 AM
    factor & simplify
    1+2 tan^2 x + tan^4 x
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    May 14, 2008, 10:59 AM
    Let . Make the substitution and you have a quadratic you can factor.
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