Question

Directions: Simplify by multiplying the expressions.

1. (X + 8) (x-8)
2. (y + 10) (Y-10)
3. (m-4)(m + 4)
4. (n - 9) (n + 9)
5. (3x + 1)(3x - 1)
6. (5c+4)(5c - 4)
7. (11z-7)(11z + 7)
8. (20x + 9) (20x-9)
9. (8x + 3y)(8x - 3y)

Answer 1

`1.{x}^(2) - 64`

`2. {y}^(2) - 100`

`3. {m}^(2) - 16`

Answer 2

1. (x + 8) (x - 8) = x^2 - 64

2. (y + 10)(Y - 10) = y^2 - 100

3. (m - 4)(m + 4) = m^2 - 16

4. (n - 9)(n + 9) = n^2 - 81

5. (3x + 1)(3x - 1) = 9x^2 - 1

6. (5c + 4)(5c - 4) = 25c^2 - 16

7. (11z - 7)(11z + 7) = 121z^2 - 49

8. (20x + 9)(20x - 9) = 400x^2 - 81

9. (8x + 3y)(8x - 3y) = 64x^2 - 9y^2

Explanation:

:)