-4*a*c - 4*b*c %2B 2*(a*b) %2B 4*c^2 %2B a^2 %2B b^2 – InterviewSolution

InterviewSolution

1.

-4ac - 4bc %2B 2(ab) %2B 4*c^2 %2B a^2 %2B b^2

Answer»

We know,(a+b+c) ²=a²+b²+c²+2ab +2bc +2ac.

Then,a^2 + b^2 + (-2c)^2 + 2ab - 4bc - 4ac= (a + b - 2c)^2= (a + b - 2c)(a + b - 2c)

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