Question

Simplify:
(i) (a + b)3 + (a - b)3 + 6a(a? - 62)
(ii) (2a + b + c)2 + (2a - b - c)2​

Answer 1

First.. Multiply equation (1) by 2

4a+6b+8c=70……(3)

Then substrate equation (2) from it

It will give.;

a+b+c=40.First.. Multiply equation (1) by 2

4a+6b+8c=70……(3)

Then substrate equation (2) from it

It will give.; a+b+ c=40

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