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Byju's Answer
Standard IX
Mathematics
Identity (x+y)(x-y)
Q2. if a 2+b ...
Question
Q2. if a2 +b2+c2=250 and ab+bc+ca=3 find a+b+c
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Solution
(a+b+c)²=a²+b²+c²+2(ab+bc+ca)
=250+2×3
=256
a+b+c=√256
=16
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If a
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