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If the zeroes of (p(x)=x^2-2kx+9) are (k+\sqrt{7}) and (k-\sqrt{7}), what is the value of (k)?
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Answer and explanation
Correct answer: (4)
From the product (k^2-7=9), we get (k^2=16), and (k=4) fits the given form. In exams use the product to find the unknown.
Frequently asked questions
What is the correct answer to this question?
(4)
Why is this the correct answer?
From the product (k^2-7=9), we get (k^2=16), and (k=4) fits the given form. In exams use the product to find the unknown.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Irrational numbers and real numbers.
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