Subtracting Indices
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More Lessons for Arithmetic Math
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When
dividing numbers in exponent notation with the
same base, we
subtract the exponents.
Consider:

This is the second law of exponents:

Example:
Simplify the following expressions, giving your answers in exponent form

Solution:

Common Error : The second law of exponent does NOT apply to subtraction of numbers in exponent notation.

The following video shows more examples of subtraction of exponents:
Subtracting Exponents
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