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xxcrashhardd Group Title

solve the radical equation √18x-9=x+4

  • 2 years ago
  • 2 years ago

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  1. 101Ryan101 Group Title
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    there are a few possible first steps.. what do you think?

    • 2 years ago
  2. xxcrashhardd Group Title
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    square it.

    • 2 years ago
  3. 101Ryan101 Group Title
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    yea, then it's: 18x-9 = x^2 +8x +16 now what?

    • 2 years ago
  4. xxcrashhardd Group Title
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    add 9

    • 2 years ago
  5. 101Ryan101 Group Title
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    ok, then it's: 18x = x^2 +8x +25 now what?

    • 2 years ago
  6. xxcrashhardd Group Title
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    subtract 8x?

    • 2 years ago
  7. xxcrashhardd Group Title
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    how is it 0?

    • 2 years ago
  8. 101Ryan101 Group Title
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    opps. lol

    • 2 years ago
  9. 101Ryan101 Group Title
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    lets subtrack 18x... then it's x^2 -10x + 25

    • 2 years ago
  10. 101Ryan101 Group Title
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    =0

    • 2 years ago
  11. xxcrashhardd Group Title
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    Okay, now factor it ?

    • 2 years ago
  12. 101Ryan101 Group Title
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    totally

    • 2 years ago
  13. 101Ryan101 Group Title
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    (x-5)(x-5)

    • 2 years ago
  14. xxcrashhardd Group Title
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    so my answers 5?

    • 2 years ago
  15. 101Ryan101 Group Title
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    so x = 5

    • 2 years ago
  16. 101Ryan101 Group Title
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    idneeeeed.

    • 2 years ago
  17. xxcrashhardd Group Title
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    thank you!

    • 2 years ago
  18. 101Ryan101 Group Title
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    sure!

    • 2 years ago
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