I assume the x4 is x to the 4th power, and x2 is x², or x squared. The two factors would be:
(x + 2)(x - 2)(x² + 3)
There are 4 solutions for x:
x = 2
x = -2
x = √-3
x = -√-3
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a proper factor is a factor.
a factor bug is a factor
A composite factor is a factor that is a composite number, as opposed to a prime factor which is a factor that is a prime number.
If it does not factor properly then you cannot factor it.
Factors are divisors. A factor times a factor will equal a product.