Question

9. Expand using identites.
1) (3/2 m - 5n) (3/2 m + 5n)

Answer 1

Answer: 9m^2 / 4 - 25n^2

Explanation:

Use the identity: (a-b)(a+b)=a^2 - b^2
substitute values of a and b, where a=3/2m and b=5n.
The following simplifies to (3/2m)^2 - (5n)^2.

Answer 2

(3/2 m)^2 -(5n)^2^

Explanation: