Question

The product of (x-a) (x+b) is

Answer 1

(x-a)(x-b) is equal to x^2-xb-ax-ab= x^2 -x(b+a) –ab or = x^2 -b(x+a) –ax.

Answer 2

(x-a) (x+b)    {Use the identity (x+a) (x+b) = x²+(a+b)x+a*b }

x²+ (-a+b)x+-ab

x²-abx-ab

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