Final answer:
To simplify 3 x 3, multiply the numbers together to get 9. Simplify 3² x 38 by calculating the square of 3, which is 9, and then multiplying it by 38 to get 342. Both expressions are represented in index form.
Step-by-step explanation:
To simplify the expression 3 x 3, you multiply the two numbers together. In this case, 3 multiplied by 3 is equal to 9. So, the simplified form of 3 x 3 is 9.
For the expression 3² x 38, you first calculate the square of 3, which is 3 times 3, equal to 9. Then, you multiply this result by 38. So, 9 x 38 equals 342.
Therefore, the simplified form of 3 x 3 is 9, and the simplified form of 3² x 38 is 342, represented in index form.
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