Fraction and its operation 1. When x?, the fraction X-2 / X & sup2; - 4 is meaningful 2. When x?, the value of fraction X & sup2; - 7x-8 / | x | - 1 is 0 3. When x?, the value of fraction 1 + X & sup2 / 12-6x is negative

Fraction and its operation 1. When x?, the fraction X-2 / X & sup2; - 4 is meaningful 2. When x?, the value of fraction X & sup2; - 7x-8 / | x | - 1 is 0 3. When x?, the value of fraction 1 + X & sup2 / 12-6x is negative

1. When x is not equal to plus or minus 2, the fraction X-2 / X & sup2; - 4 is meaningful
2. When x = 8, the value of fraction X & sup2; - 7x-8 / | x | - 1 is 0
3. When x is greater than 2, the value of fraction 1 + X & sup2 / 12-6x is negative