Simplify. Express your answer using positive exponents.2k9k

The expression you provided is 2k * 9k.

To simplify this, you multiply the coefficients (the numbers) and add the exponents (the powers of k).

Step 1: Multiply the coefficients 2 * 9 = 18

Step 2: Since the bases (k) are the same, you can add the exponents. Here, both exponents are 1 (since they are not specified, it is understood to be 1), so you add 1 + 1 = 2.

So, the simplified expression is 18k^2.