What is the simpler form of the following expressions?
(k+3)(k-3)
k^2 - 9
To find the simpler form of the expression (k+3)(k-3), you can use the distributive property.
Step 1: Multiply k by each term in the second parentheses (k-3):
k * k = k^2
k * -3 = -3k
Step 2: Multiply 3 by each term in the first parentheses (k+3):
3 * k = 3k
3 * 3 = 9
Step 3: Combine like terms:
k^2 - 3k + 3k - 9
Step 4: Simplify:
k^2 - 9
Therefore, the simpler form of the expression (k+3)(k-3) is k^2 - 9.