a+b=±6(sqrt(ab))

squaring on both sides

a^2 + b^2=34ab

a/b=17±12(sqrt(2))

But the answer is only 17+12(sqrt(2)). I know the extra root is because I squared on both sides.But how do we tell which is the right one?

Thanks.

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- December 6th 2013, 09:19 PMAaPaSquaring on both sides
a+b=±6(sqrt(ab))

squaring on both sides

a^2 + b^2=34ab

a/b=17±12(sqrt(2))

But the answer is only 17+12(sqrt(2)). I know the extra root is because I squared on both sides.But how do we tell which is the right one?

Thanks. - December 6th 2013, 09:49 PMromsekRe: Squaring on both sides
- December 6th 2013, 09:54 PMitrealconRe: Squaring on both sides
interesting question..

Cosmic Corporate Park 2, Cosmic Corporate Park 2 Noida, Cosmic Corporate Park 2 Resale, Cosmic Corporate Park 2 Yamuna Expressway - December 6th 2013, 10:50 PMAaPaRe: Squaring on both sides
thanks I realized my mistake.