Question

Which of the following points is in the solution set of y < x2 - 2x - 8?

(-2, -1)
(0, -2)
(4, 0)

Answer 1

(4,-2)

Answer 2

solve the quadratic equation

x^2 -2x -8=0
(x-4)(x+2)=0
x-4=0
x=4
x+2=0
x=-2
- so from this result that 4 and -2 are roots of this equation
- because there is x^2 -2x -8 >y so this signing ,mean that ....

so - sorry - answer on this question i think that you can getting just substituting these values of x and check what values of y will satisfie this property that x^2 -2x -8 is greater than y

hope that is understandably

good luck

bye

Answer 3

thx