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Hally
Group Title
Solve the equation. Identify any extraneous solutions.
sqrt a = 8
A. –64 is a solution of the original equation. 64 is an extraneous solution.
B. 64 is a solution of the original equation.
C. 64 is a solution of the original equation. –64 is an extraneous solution.
D. no solution <<<
 one year ago
 one year ago
Hally Group Title
Solve the equation. Identify any extraneous solutions. sqrt a = 8 A. –64 is a solution of the original equation. 64 is an extraneous solution. B. 64 is a solution of the original equation. C. 64 is a solution of the original equation. –64 is an extraneous solution. D. no solution <<<
 one year ago
 one year ago

This Question is Closed

tyteen4a03 Group TitleBest ResponseYou've already chosen the best response.1
To get rid of square roots, square both sides.
 one year ago

precal Group TitleBest ResponseYou've already chosen the best response.1
dw:1359074224200:dwdo just like tyteen4a03 suggested
 one year ago

Hally Group TitleBest ResponseYou've already chosen the best response.0
so, is it b or c??
 one year ago

Hally Group TitleBest ResponseYou've already chosen the best response.0
i say c. am i right??
 one year ago

tyteen4a03 Group TitleBest ResponseYou've already chosen the best response.1
@Hally The answer is B. Whenever you are raising a number to an even number, the negative sign disappears. (If you need proof just ask.)
 one year ago

Hally Group TitleBest ResponseYou've already chosen the best response.0
i know that part thanks! :)
 one year ago

precal Group TitleBest ResponseYou've already chosen the best response.1
dw:1359074648834:dw
 one year ago

precal Group TitleBest ResponseYou've already chosen the best response.1
dw:1359074661681:dwquestion is, is this true?
 one year ago

Hally Group TitleBest ResponseYou've already chosen the best response.0
no. sqrt 64 = 8 and 8 is not equal to 8
 one year ago

precal Group TitleBest ResponseYou've already chosen the best response.1
dw:1359074893672:dw
 one year ago

precal Group TitleBest ResponseYou've already chosen the best response.1
then that means that the solution is extraneous
 one year ago

Hally Group TitleBest ResponseYou've already chosen the best response.0
oh. so the answer is "64 is a solution of the original equation. –64 is an extraneous solution" .... right?
 one year ago
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