if a + b + C is equal to 17 and a b + BC + CA is equal to 92 then a square + b square + c square is equal to
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if a + b + C is equal to 17 and a b + BC + CA is equal to 92 then a square + b square + c square is equal to
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Answer:
(a+b+c)²= a²+b²+c²+2ab+2bc+2ca
a²+b²+c²=(a+b+c)²-2(ab+bc+ca)
and then put the value
a+b+c=17
ab+bc+ca=92