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Math Help - Please help me understand this problem

  1. #1
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    Please help me understand this problem

    I can quite grasp what is going on here. Can your bright minds please shine a little light my way. I do understand the first 2 but I don't know how they came about with the last two.
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  2. #2
    MHF Contributor

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    Re: Please help me understand this problem

    You appear to be saying that you know that [tex](x^a)^b= x^{ab}[tex] so that [tex](x^{p+1})^2(x^{p-1})^2= (x^{2(p+1)})(x^{2(p-1)})[tex].

    Do not know that x^{a}x^{b}= x^{a+ b}? x^{2(p-1)+ 2(p+1)}= x^{2p- 2+ 2p+ 2}.
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  3. #3
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    Re: Please help me understand this problem

    ^^thanks! This make sense now.
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