1.

If a+b+c=0 then the value of (a^2+ b^2+c^2)/(bc+ca+ab) is (1)2(2)-2 (3)4 (4)-4

Answer» If a+b+c=0 then the value of (a^2+ b^2+c^2)/(bc+ca+ab) is
(1)2
(2)-2
(3)4
(4)-4


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