81.6k views
4 votes
X squared minus 9 equals x squared plus K what is k​

2 Answers

1 vote

Answer:

k = -9

Explanation:


x^(2) -9=x^(2) + k\\

subtract
x^(2) from each side

-9 = k

k = -9

User Neo
by
5.7k points
5 votes

Answer:

-9 is the answer

Explanation:

User Amruta
by
6.0k points