Anonymous
Anonymous asked in Science & MathematicsMathematics · 1 month ago

Precalc help?

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  • rotchm
    Lv 7
    1 month ago

    Hints: 

    1) 2x² -x - 1 = [by factoring] = (2x+1)(x-1).2) cos(3θ) = ?

    Do/comment these, unanon yourself, and then we will take it from there. 

    Hopefully no one will spoil you the answers thereby depriving you from your personal enhancement; that would be very inconsiderate of them. 

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