Sum of Numbers

The sum of the square of three numbers are 138.And the product of these numbers are 131. Then What is the sum of these number?

mutha_macks
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Aug 22nd, 2008
12
3075

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nandhakumar1
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Nov 26th, 2009

131 is prime number?It cant become the product of three numbers,
so it is wrong.

suhana
Profile Answers by suhana Questions by suhana

Jul 29th, 2010

No,Its correct 9^2+7^2+1^1=131
the sum is=17

harish 27sit145
Profile Answers by harish 27sit145

Sep 29th, 2010

Use formula (a+b)^2=a^2+b^2+2ab
=138+131
=269
Taking square root we get a+b=17 as answer