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9 votes
Please, someone help? ​

Please, someone help? ​-example-1
User Incpetor
by
8.0k points

1 Answer

10 votes

Answer:

x = -5 +
√(26)

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

User Mazal
by
8.3k points

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