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Question
Write the following number using positive indices.
`(2/7)^-2`
Sum
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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`
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RELATED QUESTIONS
Simplify:
`((1/7)^-3)^4`
Simplify:
`((2/5)^-2)^-3`
Write the following numbers using positive indices.
`(1/6)^-3`
Simplify using law of exponents.
(64)3
How many zeros are there in 10010?
Which of the following is not equal to `((-5)/4)^4`?
`[(7/11)^3]^4 = (7/11)^-`
`(6/13)^10 ÷ [(6/13)^5]^2 = (6/13)^-`
34 > 43
Arrange in descending order:
22+3, (22)3, 2 × 22, `3^5/3^2`, 32 × 30, 23 × 52
