Exponents in Math - Negative Exponents | скачать в хорошем качестве

Exponents in Math - Negative Exponents |

Our topic for today is Negative Exponents. Five raises to 2 is equal to 5 into 5 which is equal to 25. Do you know what 5 raised to negative 2 is ? Here five is the base and negative 2 is the negative exponent. In five raised to 2 we multiply 5 twice. In 5 raised to negative 2 we need to do the exact opposite operation. Instead of multiplying we need to divide. Dividing by 5 is equal to multiplying by 1 upon 5, therefore 5 raised to negative 2 is equal to 1 upon 5 into 1 upon 5. Which is equal to 1 upon 25 which is equal to 1 upon 5 raised to 2. Let us take another example. 7 raised to negative 3 is equal to 1 upon 7 multiplied 3 times. Therefore, 7 raised to negative 3 is equal to 1 upon 7 into 1 upon 7 into 1 upon 7 is equal to 1 upon 343. Which is equal to 1 upon 7 raised to 3. Hence, we can say that a raised to minus m is equal to 1 upon a raised to m.