1.

By usingproperties of determinants, show that:(i)∣∣∣∣a−b−c2a2a2bb−c−a2b2c2cc−a−b∣∣∣∣=(a+b+c)3(ii)∣∣∣∣x+y+2zxyzy+z+2xyzxz+x+2y∣∣∣∣=2(x+y+c)3

Answer»

By usingproperties of determinants, show that:
(i)
abc2a2a2bbca2b2c2ccab
=(a+b+c)3

(ii)
x+y+2zxyzy+z+2xyzxz+x+2y
=2(x+y+c)3



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