Question

9) (13k – 2d)(2d + 13k)

Answer 1

Ответ:

169k^2 - 4d^2

Объяснение:

Answer 2

To multiply the expression (13k - 2d)(2d + 13k), you can use the distributive property (FOIL method):

(13k - 2d)(2d + 13k)

= 13k * 2d + 13k * 13k - 2d * 2d - 2d * 13k

Now, let's simplify each term:

1. 13k * 2d = 26kd
2. 13k * 13k = 169k^2
3. 2d * 2d = 4d^2
4. 2d * 13k = 26kd

Now, put them all together:

26kd + 169k^2 - 4d^2 - 26kd

Notice that the terms 26kd and -26kd cancel each other out:

26kd - 26kd = 0

So, the simplified expression is:

169k^2 - 4d^2