Question

simplify each number(-8)^2/3

Answer 1

is it -51/3

Answer 2

64
——
3

Answer 3

Step 1 :

Raise -8 to the 2nd power
Raising to a Power :

1.1 Negative number raised to an even power is positive

For example let's look at (-7)6 , where (-7) , a negative number, is raised to 6 , an even exponent :

(-7)6 can be written as (-7)•(-7)•(-7)•(-7)•(-7)•(-7)

Now, using the rule that says minus times minus is plus, (-7)6 can be written as (49)•(49)•(49) which in turn can be written as (7)•(7)•(7)•(7)•(7)•(7) or 76 which is positive.

We proved that (-7)6 is equal to (7)6 which is a positive number

Using the same arguments as above, replacing (-7) by any negative number, and replacing the exponent 6 by any even exponent, we proved which had to be proved

1.2 8 = 23 (-8)2 = (23)2 = 26

Equation at the end of step 1 :

26
——
3
Step 2 :

26
Simplify ——
3
Final result :

64
——
3

Answer 4

@Phebe STOP COPY PASTING

Answer 5

okay lolzzz but that is the write answer because i didit on a notpad also but didnt finsh SORRY I GOT LAZY

Answer 6

\(\huge -8^{\frac{2}{3}}=\sqrt[3]{({-8})^2}\)

Answer 7

O_0 its bibby

Answer 8

well my text book says it 44. but i have no clue how to get that

Answer 9

4 not 44

Answer 10

hmmmm

Answer 11

what's 8 times 8?
Look at bibby post carefully