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algebra

posted by on .

use factoring and the zero-product property to solve

4a^2-11a+6=0

9r^2-30r+21=-4

  • algebra - ,

    for 1 (4x-3)(x-2)

    for 2 (3x-3)(3x-7)

  • algebra - ,

    can you explain how you got that? i'm completely lost

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