Question

a2+ b2 + c2 = 250 and ab + bc + ca = 3, then find the value of
a + b + c
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Answer 1

Answer:

a + b + c =16

Step-by-step explanation:

a2+ b2 + c2 = 250

ab + bc + ca = 3

find the value of

a + b + c

(a+b+c)²=a2+ b2 + c2+2ab + 2bc + 2ca

(a+b+c)²=250+2(ab + bc + ca)

=250+2×3

=250+6=256

(a+b+c)²=256

a+b+c=√256

a+b+c=16