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If abcd = 1, where a, b, c, d are positive reals, then the minimum value of a^2 + b^2 + c^2 + d^2 + ab + ac + ad + bc + bd + cd is

+2 votes
in Class 10 by kratos

If abcd = 1, where a, b, c, d are positive reals, then the minimum value of a2 + b2 + c2 + d2 + ab + ac + ad + bc + bd + cd is

(A) 6

(B) 10

(C) 12

(D) 20

1 Answer

+4 votes
by kratos
 
Best answer

Correct option (B) 10

Explanation:

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