1. Section 2.2 Zero and Negative Exponents
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2. I) Review: Powers of 2

3. II) Zero Exponents
When a number has an exponent of zero, the value will be equal to one
Even zero to the power of zero is also equal to one
We need to be careful with negative bases. Can you see the difference between the three expressions?
The last two are the same, we take the base to the exponent of zero first. Then we multiply one by the negative sign
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4. If a power has an exponent of zero, it doesn’t matter what the base is
If a power has an exponent of zero, it doesn’t matter what the base is. The value will be equal to one
When simplifying an expression, we need obey the order of operation: BEDMAS
Simplify all “Brackets” first
Then we take it to the exponent. If the exponent is zero, then the value now will be equal to one
Next we multiply or divide (from left to right)
Then add or subtract (from left to right)
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5. III) Basic Principles of Exponent Laws
Multiply ‘a’ by itself ‘n’ number of times
Anything to the power of zero is equal to 1.
Take the reciprocal of the base and change the sign of the exponent

6. IV) Additional Exponent Laws

7. Ex: Simplify the Following:

8. Ex: Simplify