If a + b + c = 9 and ab + bc + ca = 23, find the value of a2 + b2 + c
2.
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0
Answer:
35
Step-by-step explanation:
a + b + c = 9 and ab + bc + ca = 23, find the value of a2 + b2 + c=35
Answered by
2
Step-by-step explanation:
formula (a+b+c) ^2=a2+b2+c2+2×ab+bc+ca
ans
(9) ^2=a2+b2+c2+2×23 (given a+b+c=9)
(ab+bc+ca=23 )
81=a2+b2+c2+46
a2+b2+c2=81-46
a2+b2+c2=35
answer is 35
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