rational numbers are commonly referred to as fractions
Any root ... square root, cube root, etc can be expressed as a rational exponent
sq rt of x = x1/2
cube root of x = x1/3
if there is an exponent inside the radical you can also have rational exponents with some numerator other than 1
ex 4th root of x3 = x3/4
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If the exponent or raised power of a number is in the form of p/q the exponent is said to be rational exponent. For example= 11/2 22/3
You subtract the exponent of the denominator from that of the numerator.
It is: 5.08*10^8 in scientific notation and the exponent of 10 is 8
15.236
You can use any number - rational or otherwise - as an exponent.