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Which are the roots of (x^2+9x+20=0)?
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Answer and explanation
Correct answer: (x=-4,-5)
(x^2+9x+20=(x+4)(x+5)), so the roots are (-4) and (-5). In exams, a positive middle term can give negative roots.
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What is the correct answer to this question?
(x=-4,-5)
Why is this the correct answer?
(x^2+9x+20=(x+4)(x+5)), so the roots are (-4) and (-5). In exams, a positive middle term can give negative 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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