Algebra 2 Help Please =]?

Question

step by step in detail Please =]

1) 8 ^2/3

2) 32^-3/5

3) -(81^1/4)

Cannot use calculator

Answer 1

1) 8 ^2/3 = (2^3)^2/3 = 2^2 = 4

2) 32^-3/5 = (2^5)^-3/5 = 2^-3 = 1/(2^3) = 1/8

3) -(81^1/4) = -(3^4)^1/4 = -3

Answer 2

1. 8 ^ 2/3 = (3 root of 8) ^2
= 2^2 which is equal to 4

2. 32^3/5
= (5 root of 32) ^ 3
=2^3
=8

3. (-81^1/4)
=(4 root of -81) ^1
= 4 root of 81 i
=emmm... haha

Answer 3

when something is raised by a fractional power you need to do two steps. First is the numerator of the power is used to raise the base to that power, and second the denominator is used to root the base.

So for 1. that would be 8^2=16 then the cube root of 16 which is 4.

Use your calculator to double check.

Answer 4

8^2/3 is the cube root of 8^2, or cube root of 64, or 4.

See if you can do the others.

Hint: 32^-3/5 is 1/(32)^3/5

Answer 5

When a number is to an exponential fration, it is the number to that root times the numerator of the fraction, such as 8^2/3 is 3rt. of 8^2 i think...

Answer 6

8 is the same as 8 over 1 right? So take 8 times 2 , which is 16, and then divide that by 3 which will give you 5.33333

Answer 7

I'm too lazy to do the work, but I will tell you this. You can't do these kinda of exponents in algebraic format because there is only one step. Just plug these problems into your calculator because you don't need to show any work.

Answer 8

4

8

-3

Answer 9

well you could just put it in a calculator, dont know if that helps much if you need to show your work. Try consulting the book, they have step by step instructions for almost all problems.

Answer 10

1) 21 and 1/3
2) 6.10351625E-6
3) -20.25

too lazy to put detail
vote for being lazy !!!!!!!!!