Which of the following expressions simplifies to a negative number? Select all that apply. (-1)(-1)(-1)(-1)
(-1)(-1)
(-1)(-1)(-1)
(-1)(-1)(-1)(-1)(-1)

Wait like all of them or some? I think it's 3 and 4.

Step-by-step explanation:

You add the two negative (negative + negative =positive). 3 and 4 have an extra left over which makes one negative, unless I did that wrong

Wait like all of them or some? I think it's 3 and 4.

Step-by-step explanation:

You add the two negative (negative + negative =positive). 3 and 4 have an extra left over which makes one negative, unless I did that wrong

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation: