4. Write the set
A = {x € R|(x² – 9)( x²+ x - 2) >0}
as a union of intervals.

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.

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dfj dt

step-by-step explanation:

vjnijernv

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !