Which of the following expressions are equivalent to 2/x^4-y-^4 choose all that apply

B and D.

Step-by-step explanation:

B.  The numerator = 2*1 = 2 and x^4 - y^4 = (x^2 - y^2)(x^2 + y^2).

D .  (x^2)^2  - (y^2)^2 = x^4 - y^4.

The answer are options

and  

Step-by-step explanation:

As all the options are multiplication of fractions the option A cannot be an answer because the numerator multiplication is 1 and different to 2. In the case of option C, observe that if we multiply the denominators we have:

As we know for the expanding of the square binomials:

Which is different from the denominator compared:

Thus option B cannot be an answer either.

Noting that the denominator compared is a square of two difference by definition, therefore, can be written as:

This results in the same denominator as option B. So, option B is a possible answer.

Finally, in the denominator of option D, we can solve the exponents of this factor.

Which results in the same as the denominator compared, this let option D to be a possible answer.

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.