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algebra

posted by on .

multiply using FOIL and identify values of a, b, & c.
(5x +5)(6x - 8)

  • algebra - ,

    30x^2-10x-10

    And what do you mean about the values of a,b,and c

  • algebra - ,

    That's just the way the question was asked?

  • algebra - ,

    30 x^2 -10 x - 40

    a = 30
    b = -10
    c = -40

  • algebra - ,

    Thanks!

  • algebra - ,

    I assume it means a, b and c in quadratic formula

    if
    a x^2 + b x + c = 0

    then
    x = [ -b +/- sqrt (b^2-4ac) ] / 2a

    Which I used to factor the expression in your question Lea.

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