Advertisements
Advertisements
Question
State, whether the following number is rational or not :
`( [√7]/[6sqrt2])^2`
Sum
Advertisements
Solution
`( [√7]/[6sqrt2])^2`
= `( √7 )^2/( 6^2 xx √2)^2 ...[∵ (a/b)^2 = a^2/b^2]`
= `7/[ 36 xx 2 ]`
= `7/72`
`7/72` is rational Number
∴ `( [√7]/[6sqrt2])^2` is a rational Number.
shaalaa.com
Is there an error in this question or solution?
