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ExplainItLikeImFive
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Solve the equation. Identify any extraneous solutions.
 one year ago
 one year ago
ExplainItLikeImFive Group Title
Solve the equation. Identify any extraneous solutions.
 one year ago
 one year ago

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ExplainItLikeImFive Group TitleBest ResponseYou've already chosen the best response.0
 one year ago

ExplainItLikeImFive Group TitleBest ResponseYou've already chosen the best response.0
A. 6 is a solution to the original equation. The value –5 is an extraneous solution. B. 6 and 5 are both extraneous solutions. C. 5 is a solution to the original equation. The value –6 is an extraneous solution. D. 6 and –5 are solutions.
 one year ago

dan815 Group TitleBest ResponseYou've already chosen the best response.0
do u know the meaning of extraneous
 one year ago

ExplainItLikeImFive Group TitleBest ResponseYou've already chosen the best response.0
That it's unrelated, I think.
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
square both sides x^2 = x+ 30 x^2 x  30 = 0 can u solve this?
 one year ago

ExplainItLikeImFive Group TitleBest ResponseYou've already chosen the best response.0
Ill try
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
extraneous means that although the working out gives it as a solution , it is not possible as a root
 one year ago

ExplainItLikeImFive Group TitleBest ResponseYou've already chosen the best response.0
5 and 6?
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
not quite (x  6)(x + 5) = 0 giving x = 6 , 5
 one year ago

ExplainItLikeImFive Group TitleBest ResponseYou've already chosen the best response.0
So what do I do with that?
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
well see if these roots are possible by substituting each into the original equation
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
eg x = 6 6 = sqrt(6 + 30) 6 = 6  so that is a genuine root
 one year ago

ExplainItLikeImFive Group TitleBest ResponseYou've already chosen the best response.0
So I can eliminate B and C
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
is 5 a solution?
 one year ago

ExplainItLikeImFive Group TitleBest ResponseYou've already chosen the best response.0
I dont think so.
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
try plugging in 5 for x in the original equation
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
 5 = sqrt (5 + 30) does that work out?
 one year ago

ExplainItLikeImFive Group TitleBest ResponseYou've already chosen the best response.0
No
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
what are the square roots of 25?
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
5 ANd 5 right?
 one year ago

ExplainItLikeImFive Group TitleBest ResponseYou've already chosen the best response.0
Yes
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
so its a genuine root
 one year ago

ExplainItLikeImFive Group TitleBest ResponseYou've already chosen the best response.0
So they're both genuine making them both solutions.
 one year ago

ExplainItLikeImFive Group TitleBest ResponseYou've already chosen the best response.0
I do believe I'd pick D
 one year ago

ExplainItLikeImFive Group TitleBest ResponseYou've already chosen the best response.0
Thank you very much.
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
please explain why thats wrong
 one year ago

Laaislima Group TitleBest ResponseYou've already chosen the best response.0
ask the teacher, I answered D and I got it wrong.
 one year ago

dan815 Group TitleBest ResponseYou've already chosen the best response.0
dw:1377219675010:dw
 one year ago

dan815 Group TitleBest ResponseYou've already chosen the best response.0
is this your question?
 one year ago

dan815 Group TitleBest ResponseYou've already chosen the best response.0
oh sorry this is your question dw:1377219778699:dw
 one year ago

dan815 Group TitleBest ResponseYou've already chosen the best response.0
your answers are 6 and 5!
 one year ago

dan815 Group TitleBest ResponseYou've already chosen the best response.0
dw:1377219879123:dw
 one year ago

Laaislima Group TitleBest ResponseYou've already chosen the best response.0
The right answer should be 6 is a solution to the original equation. The value –5 is an extraneous solution.
 one year ago
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