Question

Use a suitable identity to get each of the following products.

1. (2y + 5) (2y - 5)

2. (2a-1/2)(2a-1/2)

3. (6x - 7) (6x + 7)

4. (- a/2 + c/2) (- a/2 + c/2)

5. (3a + 9b) (3a - 9b)

6. 2(a - 9)2​

Answer 1

Answer:

1. 4y^2 - 25

2. 4a^2 - 2a + 1/4

3.36x^2 - 49

4. a/4 + -ac/2 + c/4

5. 9a^2 - 81b^2

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