Factor completely.
81x4-1
a. (3x + 1)(3x - 1)(3x + 1)(3x - 1)
b. 9x? (9x2 - 1)
c. (9x2 + 1)(9x2 - 1)
d. (9x2 + 1)(3x + 1)(3x - 1)
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Option D

Step-by-step explanation:

We have the following expression

We can rewrite the expression in the following way:

Remember the following property

Then in this case and

So we have that

Now we can rewrite the expression   as follows

So

Then in this case and

So we have that

finally the factored expression is:

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

a) 0

step-by-step explanation:

i^413 x i^0 = 0 as any number multiplied by a zero is

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