math

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is these answers correct?
solve the equation: 2x^2 +8x - 17=(x +2)^2= x=-7,3
solve (v-5)^2-63=0, where v is a real number, simplify answer as much as possible. v=3 square root 7+5,-3 square root7+5
v``12.93725, -2.937254
use the quadratic formula to solve for x.
4x^2x-4=0
=x=1+squar root65/8 , 1-square root65/8=x``1.132782,-0.882782
thank yu

  • math -

    Need help quick please!! with provious questions on checking my answers.

  • math -

    the first one is correct

    the second is correct

    third, you have a typo in your equation
    the answers are correct if the equation is
    4x^2 - x - 4 = 0

  • math -

    Thanks Reiny!!

  • math -

    could you please check this for me? Thanks
    use the quadratic formula to solve for x. 4x^2-x-4=0
    x=1+ square root 65/8, 1- square root 65/8 = x``1.132782,-0.882782

  • math -

    sorry I have a few more and I need the answers quick!!
    Find the value: ^3 square root -27= 9
    Write the following in simlpified radical form: ^4 square root 80= 4
    Solve for x, where x is real number: square 5x + 9= square root 9x + 13=27

  • math -

    SIMPLIFY:
    32 3/5= 15 IS THIS CORRECT?

  • math -

    No, 32 3/5 cannot be simplified.

  • math -

    is this correct if not can you tell me wha it is please
    32 3/5= 163/5

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