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2) (a+b) (a-b) Ca²+b?) (a" +64) Evaluate |
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Answer» Answer: Step-by-step explanation: Given a+b+c=12 a^2+b^2+c^2=64 Then ab+bc+ca=? a+b+c=12 Squaring on both SIDES (a+b+c)^2=(12)^2 a^2+b^2+c^2+2(ab+bc+ca)=144 64+2 (ab+bc+ca)=144 2(ab+bc+ca)=80 ab+bc+ca=40 Mark as brainlist Follow me |
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