Question

y³ + y² - 9y - 9 =

Answer 1

y³+y²-9y-9 = y²(y+1)-9(9y+1)

=(y+1)(y²-9) = (y+1)(y-3)(9y+3)

Answer 2

y³ + y² - 9y - 9

=(y³+y²)-(9y+9)

=y2(y+1)-9(y+1)

=(y+1)(y²-9)

=(y+1)(y-3)(y+3)

Answer 3

y³+y²-9y-9

=y²(y+1)-9(y+1)

=(y+1)(y²-9)

=(y+1)(y+3)(y-3)