Question #60236
2 Answers
Explanation:
Multiply two negatives expressions together and you get a positive.
Thus we need to solve for
add 4 to both sides
square root both sides
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Note that if
This does not satisfy the condition
Explanation:
The required range of values of
or
If
Taking the square root on both sides,
or
This can be seen in the graph of
graph{x^2-4 [-5, 5, -2.5, 2.5]}
Therfore,