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13 July, 22:05

Which equation is equivalent to √x^2+81 = x+10

x + 9 = x+10

x+9=x^2+20x+100

x^2+81=x^2+100

x^2+81=x^2+20x + 100

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Answers (1)
  1. 14 July, 01:03
    0
    Answer is the last one

    to remove square root, take square on both sides
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