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COLLEGE ALGEBRA ..HELP!

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Solve by completing the square
12x^2+11x=5

  • COLLEGE ALGEBRA ..HELP! -

    divide by 12

    x^2 + (11/12)x = 5/12
    add the square of half the middle term coefficient
    x^2 + 11x/12 + 121/576 = 5/12 + 121/576
    (x + 11/24)^2 = 361/576
    x+ 11/24 = ± √361/24

    x = (-11 ± √361)/24


    BTW, just noticed below that bobpursley did the same question for you yesterday
    http://www.jiskha.com/display.cgi?id=1307404926

  • COLLEGE ALGEBRA ..HELP! -

    x^2+11/12x=5/12
    x^2+2*(11/24)*x+(11/24)^2=5/12+(11/24)^2
    (x+11/24)^2=(19/24)^2

    x+11/24=19/24
    or
    x+11/24=-19/24

  • COLLEGE ALGEBRA ..HELP! -

    How silly of me not to notice that √361 = 19

  • COLLEGE ALGEBRA ..HELP! -

    Don't worry
    sometimes it happens that 2*2=5

  • COLLEGE ALGEBRA ..HELP! -

    -6a-4=-7a+11=

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