Solve or simplify the following problem, using the properties of roots: `(1/81)^(-1/4)`

Solve or simplify the following problem, using the properties of roots: sqrt(18) -: sqrt(2)

Solve or simplify the following problem, using the properties of roots: root(3)(100 - 36)

Solve or simplify the following problem, using the properties of roots: sqrt(150) - sqrt(96)

Solve or simplify the following problem, using the properties of roots: sqrt(63) + sqrt(28)

Simplify the following 81^(-1//4)

Simplify the following: (256/81)^(5/4)

Simplify the following using addition and subtraction properties of surds : 5root3(40) +2root3(625)-3root3(320)

Simplify the following using addition and subtraction properties of surds : 4root3(5)+2root3(5)-3root3(5)

Simplify each of the following by using suitable property. Also name the property. [(1)/(5)xx(2)/(15)] -[(1)/(5)xx(2)/(5)]

In the following find the approximate values, using differentials : (81.5)^(1//4)