exam Maths Puzzle Numerical Ability

For the following equation: f(x) = 1/x^2-2x-8, find the interval(s) where f(x)<0. Possible answers: A) (-4,2) B)(-2,4) C)(2,4) D0 (2,8)

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exam Other Question

Determine the domain and range of each relation. y=-2x+1 Simplify.

(2m cubed n) to the 4th power(3m to the 4th power n squared) to the 2nd power.