d. a²-6a-9
9. Which of the following is the product of the given expression (x-2)(x+2)
a. 2x2 + 4
b. 2x2-4
c. x2 + 4
d. x2-4
10. Find the product of the given expression (x + 2)(x2 - 2x + 4)?
a. X3-8
b. x3 +8
c. X3-4
d. x² + 4
2​