1.

If ∣∣∣∣∣(b+c)2a2a2b2(a+c)2b2c2c2(a+b)2∣∣∣∣∣=kabc(a+b+c)3, then k=

Answer» If ∣∣
∣
∣
∣
(b+c)2a2a2b2(a+c)2b2c2c2(a+b)2∣∣
∣
∣
∣
=kabc(a+b+c)3,

then k=


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