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math

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Factor completley

12r^2 +36rf +27f^2

5x^5-20x^4+30x^3

Can anyone please help me with these two problems. I have to get them done and do not understand them. Please help me.

  • math -

    12r^2 +36rf +27f^2
    = 3(4r^2 + 12rf + 9f^2)
    = 3(2r+3f)(2r+3f) or 3(2r+3f)^2

    5x^5-20x^4+30x^3
    = 5x^3(x^2 - 4x + 6)

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