[ Video Instruction: Exponential Notation ]
Another way to read the above example is "5 raised to the second power."
It is important to point out the last two solved problems, what is different?The square root can be thought of as the opposite of squaring a number. In other words, if we want the square root of 16 the question is "what number squared gives 16?" Actually there are two answers to this question, 4 and −4 because:
If A and B are positive and real the following property is useful for simplifying square roots: