Question

Please awnser this
If a^2+b^2+c^2=250 and ab+bc+ca=3 fand a+b+c.

Answer 1

hey your ans is here

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given

a2+b2+c2=250
Ab+BC+ca=3

to find a+b+c

using identity

(a+b+c)2=a2+b2+c2+2(Ab+BC+ca)
(a+b+c)2=250+6
a+b+c=√256
a+b+c=16

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Answer 2

since ,(a+b+c)^2 = a^2+ b^2 +2 (ab+bc+ca)
a+b+c = 250 + 2 × 3
a+b+c = 250 + 6
256 ^ 2 of 16 is answer