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hba
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Why dont you try to solve it :)

TiaW
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i did i got 3. am i right?

hba
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Can you show me the working @TiaW

TiaW
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yeah hold on

hba
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I am waiting.

03225186213
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\[3\sqrt{(x+4)2}=13\]

03225186213
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is it this?

TiaW
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@03225186213 yes

TiaW
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i redid it. i got 21

TiaW
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3[rt(x+4)]  2 = 13
3[rt(x+4)] = 15
rt(x+4) = 5
x+4 = 25
x = 25  4
x = 21

TiaW
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am i right?

hba
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You said 2 was also in the root ?

03225186213
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divide both sides by 3
take square on both sides
add 2 to both sides
and at last subtract 4 from both sides

hba
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If not you are right.

TiaW
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@hba no its not

hba
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Well then you are right :) @TiaW

TiaW
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thnxx

hba
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If it looks like this :)
\[3\sqrt{x+4)}2=13\]

TiaW
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yep dats how it look

hba
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Awesome :)