SOLUTION: Solve by completing the square. x2 = 5x + 2
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Question 978593: Solve by completing the square. x2 = 5x + 2
Found 2 solutions by 428225, ikleyn:
Answer by 428225(90) (Show Source): You can put this solution on YOUR website!
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Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website!
1. Rewrite your equation as
= .
2. Complete the square for the polynomial in the left side
= - - = - - = - = - .
3. Now your equation is
- = .
4. Rewrite it in the form
= .
5. Take the square root in both sides:
= +/- .
6. Now = +/- .
You got two roots. Congratulations!
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