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trigonometry

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Complete the square to Solve Quadratic Equation:
Solve the equation. Express the answer in simplest radical form.
-x^2-7x=-11

Please Help!!!! Thanks.

  • trigonometry - ,

    -x^2-7x+11=0
    you multiply all of it by -1 to change the x into postive.
    therefore,
    x^2+7x-11=0
    then apply this to the fo9rmula
    -b+- the sqaure root of (b^2 - 4*a*c)/2a

    where a = 1
    b=7
    c=-11

    work out the answer, its very easy (:

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