Posted by katty on Sunday, November 27, 2011 at 1:38pm.
The x-intercept is a point in the equation where the f ( x ) -value is zero.
4 x ^ 2 - 4 = 0
4 x ^ 2 = 4 Divide both sides with 4
x ^ 2 = 1
x = sqrt ( 1 )
x = + OR - 1
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