Question

     a)  A = (x – 5)(x² + 26) + (x – 5)(5x – 1)

               b)

Answer 1

A = ( x - 5 ) ( x² + 26 + 5x - 1 )

A = ( x - 5 ) ( x² + 5x + 25 )

A = ( x - 5 )³

Answer 2

\(\text{a. A = (x - 5)(x^2 + 26) + (x - 5)(5x - 1)}\\ A=\left(x-5\right)\left(x^2+5x+25\right)\\ A=x^3-5^3\\ A=x^3-125\)

 

Answer 3

\(=\left(x-5\right)\left(x^2+26+5x-1\right)\)

\(=x^3-125\)