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If (\alpha=4+\sqrt{15}) and (\beta=4-\sqrt{15}), what is the value of (\frac{\alpha}{\beta}+\frac{\beta}{\alpha})?

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Answer and explanation

Correct answer: (62)

Here (\alpha+\beta=8) and (\alpha\beta=1), so (\frac{\alpha}{\beta}+\frac{\beta}{\alpha}=\frac{\alpha^2+\beta^2}{\alpha\beta}=\frac{64-2}{1}=62). In such questions, first find the sum and product.

Related tags

Conjugate-IrrationalsZeroes-ExpressionExpert

Frequently asked questions

What is the correct answer to this question?

(62)

Why is this the correct answer?

Here (\alpha+\beta=8) and (\alpha\beta=1), so (\frac{\alpha}{\beta}+\frac{\beta}{\alpha}=\frac{\alpha^2+\beta^2}{\alpha\beta}=\frac{64-2}{1}=62). In such questions, first find the sum and product.

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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