Insert the corresponding expression:
Insert the corresponding expression:
Step 1: The problem provides the expression and asks us to expand it.
Step 2: We'll use the exponent rule for the power of a product, which states that . Applying this rule to our expression, we get:
Since multiplication is commutative, the order of the factors doesn't affect the product. Therefore, the expression can also be written as:
Therefore, the correct expressions are and .
a'+b' are correct