passpadi

2009

Mathematics

JAMB

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 < 1
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