Negative exponents and power rule for exponents

This lesson will cover how to find the power of a negative exponent by using the power rule. If you have two positive real numbers a and b then b^(-a)=1/(b^a). Think of it this way: in order to change the exponent in b^(-a) from -a to positive a, you move the entire value from the numerator to the denominator to get 1/(b^a).

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Power rule for exponents to simplify powers of powers

Think about this rule as the “power to a power” rule. In other words, what happens when we raise an exponential expression (a base raised to some power) to another power (when one exponential expression becomes the base of another exponential expression)?

Learn mathKrista KingMarch 8, 2020math, learn online, online course, online math, pre-algebra, fundamentals, fundamentals of math, power rule, power rule for exponents, exponent rules

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