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What roots are obtained for (2x^2+8x+1=0) by completing the square method?
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Answer and explanation
Correct answer: (x=-2\pm\frac{\sqrt{14}}{2})
Since ((x+2)^2=\frac{7}{2}), (x=-2\pm\sqrt{\frac{7}{2}}=-2\pm\frac{\sqrt{14}}{2}). In exams, write the square root in simplified form.
Frequently asked questions
What is the correct answer to this question?
(x=-2\pm\frac{\sqrt{14}}{2})
Why is this the correct answer?
Since ((x+2)^2=\frac{7}{2}), (x=-2\pm\sqrt{\frac{7}{2}}=-2\pm\frac{\sqrt{14}}{2}). In exams, write the square root in simplified form.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Quadratic Equations. Topic: Methods of Solving Quadratic Equations.
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