Answer:
(x-3) (x-9) or (x-9) (x-3)
Step-by-step explanation:
1) what * what=27
and what+what=-12
factors of 27: 9,3 -9,-3 1,27 -1,27
-9+-3=-12
hence -9 and -3 are our factors
(substitute -9 and -3 in place of -12)
x^2-9x-3x+27
split into two groups:
x^2-9x
(both have a gcf of x)
x(x-9)
and
-3x+27
(both have a gcf of "-3"
-3(x-9)
take the numbers OUTSIDE the parantheses and put them in a bracket:
(x-3) (x-9)
Hope this helps!
