38. If a? +62 +62 = 250 and ab + bc + ca = 3; find a + b + c
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Click here to get an answer to your question ✍️ If a^2 + b^2 + c^2 = 250 and ab + bc + ca = 3 , then find a + b + c .
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a2+b2+c2=250 & ab+bc+ac=3, find a+b+c
→ the general formula
(a+b+c)2=a2+b2+c2+2(ab+bc+ac)
=250+2(3)
=250+6
∴(a+b+c)2=256
∴a+b+c=256
∴a+b+c=16
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