More on negative exponents (8th grade/algebra)
If the expression with a negative exponent is in the denominator, then we actually get a complex fraction, and through simplifying that, we find that the expression as if "moves" to be in the numerator but with a positive exponent. That gives us a shortcut for simplifying expressions such as 5/3−2.
After looking at that concept, we will then simplify a fairly complex expression involving several powers and several negative exponents. The goal is to simplify it so it uses the minimum number of bases and exponents.
See also
Zero and negative exponents — video lesson
Math Mammoth Grade 8 curriculum