Answer:
you can name it a or b like any letters
I know this ...... it is false
Step-by-step explanation:
I think your answer is 3
....
Answer:
x^4 - 81 = 0
(x² - 9)(x² + 9) = 0
Notice that the first of these is itself a difference of two squares:
(x - 3)(x + 3)(x² + 9) = 0
So the solutions are x = 3, x = -3, x = 3i, x = -3i
