Writing an expression using positive exponents

Below is List of Rules for Exponents and an example or two of using each rule:

Due to the nature of the mathematics on this site it is best views in landscape mode. If your device is not in landscape mode many of the equations will run off the side of your device should be able to scroll to see them and some of the menu items will be cut off due to the narrow screen width.

Integer Exponents We will start off this chapter by looking at integer exponents.

In fact, we will initially assume that the exponents are positive as well. We will look at zero and negative exponents in a bit. This will be particularly important when dealing with negative numbers.

Consider the following two cases. When performing exponentiation remember that it is only the quantity that is immediately to the left of the exponent that gets the power. In the first case there is a parenthesis immediately to the left so that means that everything in the parenthesis gets the power.

The minus sign will stay out in front and will NOT get the power. Also, this warning about parenthesis is not just intended for exponents. We will need to be careful with parenthesis throughout this course. Here is a quick example of this property.

Accompanying each property will be a quick example to illustrate its use. We will be looking at more complicated examples after the properties. Which form you use is usually dependent upon the form you want the answer to be in. For example, property 4 can be extended as follows.

Other Way of Writing It

Property 4 and most of the other properties can be extended out to meet the number of factors that we have in a given problem. There are several common mistakes that students make with these properties the first time they see them. Consider the following case.

Contrast this with the following case. Again, note the importance of parenthesis and how they can change an answer! Here is another common mistake. This will be a constant refrain throughout these notes. We must always be careful with parenthesis.

Misusing them can lead to incorrect answers. Example 1 Simplify each of the following and write the answers with only positive exponents. There are many different paths that we can take to get to the final answer for each of these.

In the end the answer will be the same regardless of the path that you used to get the answer. All that this means for you is that as long as you used the properties you can take the path that you find the easiest. The path that others find to be the easiest may not be the path that you find to be the easiest.

That is one of the more common mistakes that students make with these simplification problems. At this point we need to evaluate the first term and eliminate the negative exponent on the second term.

This should always be done. The middle step in this part is usually skipped.caninariojana.com Identify parts of an expression using mathematical terms (sum, term, product, factor, quotient, including those involving whole-number exponents, in the conventional order when there are no parentheses to specify a particular order (Order of Operations).

where p is a positive rational number. Evaluate square. When simplifying an exponential expression, write it so that each base is written one time with one POSITIVE exponent. In other words, write it in the most condense form you can making sure that all your exponents are positive.

Give the student an exponential expression such as and ask the student to use properties of exponents to rewrite the expression in equivalent forms. Challenge the student to find as many ways as possible to rewrite using integer exponents.

Keeping in mind that you can multiply exponents only if they have the same base, the general rule for multiplying two numbers raised to exponents is to add the exponents. For example, x . Writing in Scientific Notation Worksheets This Algebra 1 - Exponents Worksheet is great for teaching students to read and write numbers in scientific notation.

The exponents for the scientific notation problems may be positive, negative, or both.

For positive exponents, we are simply writing out how many times a number is multiplied by caninariojana.com this case, #-2# is multiplied by itself four times, so we can rewrite the expression as #-2^4#.