Question

If u=9is the root of 1/9u+4=5​

Answer 1

Step-by-step explanation:

The square roots of 25 are √25=5 and −√25=−5 since 52=25 and (−5)2=25 . The principal square root of 25 is √25=5 . Example 2: Find the real roots of the equation x2=100 .

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