Algebra

posted by KG

If x is an integer and x is not equal to zero, which of the following are always positive and which are always negative?
a: -x to the power of 4
b: (-x) power of 4
c: x to the power of 4
d: x
e: -x

  1. Damon

    - x^4 always -
    (-x)^4 always +
    x either
    -x either

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