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mylen [45]
3 years ago
6

Please, someone help? ​

Mathematics
1 answer:
anzhelika [568]3 years ago
4 0

Answer:

x = -5 + \sqrt{26}

Step-by-step explanation:

f(x) = x² + 10x - 1

        x² + 10x = 1

        x² + 10x + 25 = 1 + 25

        (x + 5)² = 26

take the square root of each side to get:

        x + 5 = √26

        x = √26 - 5  or -5 + √26

       

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