xxcrashhardd
solve the radical equation √18x9=x+4



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

xxcrashhardd
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square it.

101Ryan101
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yea,
then it's: 18x9 = x^2 +8x +16
now what?

xxcrashhardd
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add 9

101Ryan101
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ok,
then it's: 18x = x^2 +8x +25
now what?

xxcrashhardd
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subtract 8x?

xxcrashhardd
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how is it 0?

101Ryan101
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opps. lol

101Ryan101
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lets subtrack 18x...
then it's x^2 10x + 25

101Ryan101
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=0

xxcrashhardd
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Okay, now factor it ?

101Ryan101
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totally

101Ryan101
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(x5)(x5)

xxcrashhardd
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so my answers 5?

101Ryan101
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so x = 5

101Ryan101
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idneeeeed.

xxcrashhardd
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thank you!

101Ryan101
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sure!