Question

What is the value of k?

Answer 1

Answer:k=42

Step-by-step explanation:

(5k−3)(9+k)

=(5k+−3)(9+k)

=(5k)(9)+(5k)(k)+(−3)(9)+(−3)(k)

=45k+5k2−27−3k

=5z2+42z−27

=42k