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

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

✔ (k – 9)(k – 9)

.

The product is k2 –

✔ 18

k +

✔ 81

.

Step-by-step explanation:

3/6   and 9/18

step-by-step explanation: