Answer:

Step-by-step explanation:
We want to simplify:

We need to apply the exponential property for products of powers.
Recall that:

We apply this rule to get:

This simplifies to:

We rewrite as positive index to get:

Answer:
The first one
Step-by-step explanation:
For the first choice, the binomial is multiplied by itself, so it will result in a perfect square trinomial.
Answer: 23
Step-by-step explanation:
2x + 14 = 60
2x = 46
x = 23