Advertisements
Advertisements
Question
Write the following number using positive indices.
`(2/7)^-2`
Sum
Advertisements
Solution
It is known that `"a"^-"m" = 1/"a"^"m"` where m is an integer and a is a non-zero rational number.
`(2/7)^-2`
`= 1/(2/7)^2`
`= (7/2)^2`
shaalaa.com
Is there an error in this question or solution?
RELATED QUESTIONS
Using laws of exponents, simplify and write the answer in exponential form:
(34)3
Simplify:
`[(5/8)^3]^-2`
Simplify:
`[(2/5)^-3]^2`
Write the following numbers using positive indices.
`(1/6)^-3`
Using the power rule, (37)−2 = 35
If 2m – 1 + 2m + 1 = 640, then find m
Simplify using law of exponents.
(64)3
Simplify using law of exponents.
(xm)0
`[(7/11)^3]^4 = (7/11)^-`
`[((-1)/4)^16]^2 = ((-1)/4)^-`
