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Algebra

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Solve. ã9x+81=x+5 this is my answer:x=35+3ã61/2,35-3ã61/2


is this correct.

  • Algebra - ,

    If your question is
    √(9x+81) = x+5
    square both sides
    9x+81 = x^2 + 10x + 25
    x^2 + x - 56 = 0
    (x+8)(x-7) = 0
    x = -8 or x = 7

    A quick check will show that only x=7 is a valid answer

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