a2+ b2 + c2 = 250 and ab + bc + ca = 3, then find the value of
a + b + c
Answers
Answered by
4
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
Similar questions