2009
Mathematics
67ca00ce0c643c71d77dee1f
Determine the value of x for which (x2 - 1) > 0?
A.
x < -1 or x > 1
B.
-1 < x < 1
C.
x > 0
D.
x < -1
Correct Answer: undefined
Explanation
x2 > 0 (x+1)(x-1) > 0 x = 1 or -1 -1 < x < 1
x2 > 0 (x+1)(x-1) > 0 x = 1 or -1 -1 < x < 1THIS WEEK's
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