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Using zero product rule, what are the roots of ((x-9)(x+2)=0)?
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Answer and explanation
Correct answer: (x=9,-2)
((x-9)=0) or ((x+2)=0), so (x=9) or (x=-2). In exams, set each factor equal to zero separately.
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What is the correct answer to this question?
(x=9,-2)
Why is this the correct answer?
((x-9)=0) or ((x+2)=0), so (x=9) or (x=-2). In exams, set each factor equal to zero separately.
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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