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Which equation has the solution x=1+- sqrt 5?
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5 votes
Which equation has the solution x=1+- sqrt 5?

User Wpkzz
by
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2 Answers

4 votes

Answer:

its d

Explanation:

User Sabin Chirila
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7.6k points
1 vote

x = 1 \pm √(5) \\ \\ x - 1 = \pm √(5) \\ \\ (x-1)^2 = (√(5))^2 = 5 \\ \\ x^2 -2x +1 = 5 \\ \\ x^2 -2x -4 = 0
User Peter Gerdes
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8.1k points
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