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Mathematics 17 Online
OpenStudy (anonymous):

Solve the equation x2 = 64 for x

OpenStudy (anonymous):

get rid of the ^2 by taking the square root on both sides

OpenStudy (anonymous):

-8,8

OpenStudy (anonymous):

you mean -8 and 8?

OpenStudy (anonymous):

the word is "or" since the number "8 and -8" does not exist

OpenStudy (anonymous):

A. -32, 32B. -8, 8C. 8D. 32

OpenStudy (anonymous):

well no.. the word is and.. because the answer can be both not just one or the other..

OpenStudy (anonymous):

and yes you were right it's B.. -8*-8=64 and 8*8=64

OpenStudy (anonymous):

@Aqua666 the word is or since you can't habe both at the same time

OpenStudy (anonymous):

yes you can... it's called a hyperbolic graph... unless it is stated somewhere that it need to be one or the other the answer can be -8 and 8... Or implies that it's either one or the other but there is no specification that says so... in practise you can only have one but this is a theoretical question since I see nothing about an application so both are possible at the same time... schrodinger's cat and all that

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