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What is the repeated root of (x^2+18x+81=0)?
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Answer and explanation
Correct answer: (x=-9)
((x+9)^2=0), so the repeated root is (-9). In exams, a perfect square equation has equal roots.
Frequently asked questions
What is the correct answer to this question?
(x=-9)
Why is this the correct answer?
((x+9)^2=0), so the repeated root is (-9). In exams, a perfect square equation has equal roots.
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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