If a+b+c=12,ab=12,bc=20,ac=15 then find value of a2+b2+c2
Answers
Answered by
2
Step-by-step explanation:
a2+b2+C2=2ab+2bc+2ac
=24+40+30
= 94
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Answered by
0
Answer:
a^2+b^2+c^2=50
Step-by-step explanation:
=> a+b+c = 12 (given)
Sqauring both sides, we get
(a+b+c)^2 = (12)^2
a^2 + b^2 + c^2 + 2ab + 2bc + 2ac = 144
a^2 + b^2 + c^2 + 2(12) + 2(20) + 2(15)= 144
a^2 + b^2 + c^2 + 24 + 40+ 30 = 144
a^2 + b^2 + c^2+94 =144
a^2 + b^2 + c^2 = 50
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