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help2013 Group TitleBest ResponseYou've already chosen the best response.0
im writing info
 10 months ago

help2013 Group TitleBest ResponseYou've already chosen the best response.0
\[x4=\sqrt{x+8}\]
 10 months ago

bii17 Group TitleBest ResponseYou've already chosen the best response.0
x will be equal to 1
 10 months ago

help2013 Group TitleBest ResponseYou've already chosen the best response.0
can u show me how plzzzzz! an dthanks
 10 months ago

bii17 Group TitleBest ResponseYou've already chosen the best response.0
\[(x4)^2 = x+8\] \[x^2 8x +16 = x+8\] combine similar terms it will become \[x^2 9x+8 =0\] factor (x+9) (x1) = 0 to check, substitute x=9 or x=1
 10 months ago

help2013 Group TitleBest ResponseYou've already chosen the best response.0
thanks:)
 10 months ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
\(x4 = \sqrt{x+8}\) First, before ANYTHING else, think about the Domain. \(x+8\ge 0\;or\;x \ge 8\) You tell me why? \(x4\ge 0\;or\;x \ge 4\) You tell me why? After that, if we get ANY result for x that is less than 4, we will simply discard it as extraneous. It should not even be considered as a solution. x = 1 is not correct. x = 9 is not correct.
 10 months ago

help2013 Group TitleBest ResponseYou've already chosen the best response.0
yeah thanks:)
 10 months ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
Seriously. Go try them in the original equation. They fail miserably.
 10 months ago

help2013 Group TitleBest ResponseYou've already chosen the best response.0
well then is the answer zero
 10 months ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
No, x = 0 is also incorrect. The only suspected results are x = 1 and x = 8. (The factoring shown above was incorrect.) x = 1 is immediately discarded as not in the Domain. x = 8 is a solution. x = 9 could not have been a solutions, as 9 < 1. x = 0 could not be a solution, as 0 < 1 If you rule out ALL your suspects, there is NO solution. In this case x = 8 is the winner.
 10 months ago

help2013 Group TitleBest ResponseYou've already chosen the best response.0
ohh well thats not one of my answer choices?:/
 10 months ago

help2013 Group TitleBest ResponseYou've already chosen the best response.0
opps nv thanks for the help
 10 months ago
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