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March 27, 2017

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Which is the extraneous solution of -x=sq root of 2x+15?

A. -5
B. -3
C. 3
D. 5
I think it is D...?

  • Algebra - ,

    you are correct

    if x = 5
    LS = -5
    RS = √(10+15) = √25 = 5 ≠ LS

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