If a b c 6 and ab bc ca 11 then the value of bc b c ca c a ab a b 3abc is ........

Quantitative Aptitude (CGL) Algebra

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If a+b+c = 6 and ab+bc+ca = 11, then the value of bc(b+c) + ca(c+a) +ab(a+b) +3abc is

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Explanation:

bc(b+c) + ca(c+a) +ab(a+b) +3abc = bc(b+c) + abc + ca(c+a) + abc + ab(a+b) +abc;
= bc (a + b + c) + ca (a + b + c) + ab ( a + b + c);
= (a + b + c ) (ab + bc + ca) = 6 * 11= 66.

By: MIRZA SADDAM HUSSAIN

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If a b c 6 and ab bc ca 11 then the value of bc b c ca c a ab a b 3abc is ........

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Explanation:

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