a square + b square + c square is equal to 35 and AB + BC + CA is equals to 23 find a + b + c
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Answered by
11
Step-by-step explanation:
I hope this would help.Its quiet easy .You only need to know the identity.Thats it.
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Answered by
9
Answer:
9
Step-by-step explanation:
(a+b+c)^2= a^2+b^2+c^2+2(ab+bc+ca)
(a+b+c)^2=35+2*23
(a+b+c)^2=35+46 =81
(a+b+c). =9
dhvanit75:
hi
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