Perfect square trinomial:

(a - b) 2 = (a - b) (a - b) = a2 - 2ab + b2

Find the product of (k - 9) 2 using the perfect square trinomial rule shown on the left.

The product (k - 9) 2 can also be written as.

The product is k2 - k +.

Question

Ellis Hays

19 May, 02:10

+4

Answers (1)

Know the Answer?

Gwendolyn Cross · Answer 1

k² - 18k + 81

Step-by-step explanation:

Using the given model then

(k - 9) ² with a = k and b = 9

= k² - 2 (k) (9) + 9²

= k² - 18k + 81

Perfect square trinomial:(a - b) 2 = (a - b) (a - b) = a2 - 2ab + b2Find the product of (k - 9) 2 using the perfect square trinomial rule shown on the left.The product (k - 9) 2 can also be written as.The product is k2 - k +.