Power of a Product

If the base is a product, we can distribute the exponent to the terms of the base.

For example, (4 ⋅ 5)3 is equal to

(4 ⋅ 5) ⋅ (4 ⋅ 5) ⋅ (4 ⋅ 5)

We can rearrange this expression to:

(4 ⋅ 4 ⋅ 4) ⋅ (5 ⋅ 5 ⋅ 5)

This is equal to:

43 ⋅ 53

Thus we can conclude that:

(4 ⋅ 5)3 = 43 ⋅ 53

In general:

(xy)n = (xn) ⋅ (yn)

Here are some examples:

(23)4 = (24) ⋅ (34)

((x + 1) ⋅ 5)7 = ((x + 1)7) ⋅ (57)

Quiz (1 point)

Consider the following:

(11 ⋅ 12)2 = 112 ⋅ x2

What is x?

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