Question

Please answer this....

Answer 1

x^2 - 2x -15

x^2 +3x -5x -15

x( x+3) -5( x+3)

(x-5)( x+3)

x^3 +27

x^3 + 3^3

(x+3)( X^2 - 3x + 9)


As both contains GCD as x+3

so k=3