Identify b and c in the equation:
b = 6
c = -27
Two factors must add to b, and two factors must multiply to c.
We know that one of the factors is 9, so we can set up the following equations to solve for the missing factor:
[tex]9 + y = 6[/tex]
Subtract 9 from both sides:
[tex]y = -3[/tex]
-
[tex]9y = -27[/tex]
Divide both sides by 9 to get y by itself:
[tex]y = -3[/tex]
The other factor is D. (y - 3).
