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Find the LCM:

z^4-14z^3+49z^2,3z^2-147 and 5z+35

  • math -

    z^4-14z^3+49z^2
    = z^2(z^2 - 14z+ 49)
    = x^2(z-7)^2

    3z^2-147
    = 3(z^2 - 49)
    = 3(z+7)(z-7)

    5z + 35
    = 5(z+7)

    LCM = 15z^2(z+7)(z-7)^2

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