How to write a solution to the equation x^2=5 using exponents and radicals
1 answer:
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Given:
To find:
The interval(s) on which the given function is positive.
Solution:
We have,
For zeroes,
-1 and 5 divide the number line in three parts .
Interval Selected Value Sign
-2
+
0
-
6
+
So, the function is positive for interval and
.
We can say that the function is positive for interval x < -1 and x > 5.
Therefore, the correct option is B.