For this case we have the following factorized expression:

Applying distributive property we have:

We add similar terms taking into account that: Equal signs are added and the same sign is placed.

ANswer:

Answer:
b. {-9, 3}.
Step-by-step explanation:
x^2 + 6x - 27 = 0
We need 2 numbers whose product is -27 and whose sum is + 6.
These are + 9 and - 3. So the factors are:
(x - 3)(x + 9) = 0
(x - 3) = 0 or (x + 9) = 0
x = 3 or -9.
A 3x3 square has a total of 9 markers in the array, with an extra one as a left over that doesn't fit into the array. (remember, squares are considered rectangles too)
Answer:
The next four terms are 2 3 9 and 1