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Intermediate Algebra

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Solve

x^2 + 3x + 3 = 0

-1 +- sq.rt 1-4 (1)(3)

-1 +- sq.rt 1-12 =

-1 +- i sq.rt 11/2

Is this correct?

  • Intermediate Algebra -

    no, I don't think you are using the quadratic formula correctly.
    Do you have
    for ax^2 + bx + c=0
    x = (-b ±√(b^2 - 4ac)/(2a) ??

    then for yours
    x = (-3 ±√(9-4(1)(3))/2
    = (-3 ±√-3)/2 which is a complex number

  • Intermediate Algebra -

    yes i have that formula

    i thought i was told to just put in the numbers for the variables

  • Intermediate Algebra -

    but you did not put them in the right way.

  • Intermediate Algebra -

    ok thanks for your help

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