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March 26, 2017

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I need to show that the right side equals the left side but I am having a little trouble simplifying.

k(2k+1) +(4(k+1)-1) = (k+1)(2(k+1)+1)

k^2+2k+3 For the right side?

  • Math - ,

    LS = k(2k+1) +(4(k+1)-1)
    = 2k^2 + k + 4k + 4 - 1
    = 2k^2 + 5k + 3

    RS = (k+1)(2(k+1)+1)
    = (k+1)(2k+2+1)
    = (k+1)(2k+3)
    = 2k^2 + 5k + 3

    mmmhh?

  • Math - ,

    Thank you!

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