Mark the correct alternative in each of the following-1 If x-1 x-5- then x 2-1 - 2-a 25b 10c 23d 27

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Expansion of (x^2 - y^2)

Mark the corr...

Question

Mark the correct alternative in each of the following:

(1) If $x + \frac{1}{x} = 5$ , then $x^{2} + \frac{1}{x^{2}} =$

(a) 25

(b) 10

(c) 23

(d) 27

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Solution

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Similar questions

(x + \frac{1}{x}) = 5

(x^{2} + \frac{1}{x^{2}}) = ?

25 \frac{1}{25}

If $(x + \frac{1}{x}) = 5$ , then $(x^{2} + \frac{1}{x^{2}}) = ?$
(a) $25$
(b) $27$
(c) $23$
(d) $25 \frac{1}{25}$

\frac{x}{2} + \frac{1}{3} = 1

\frac{3}{4}

\frac{4}{3}

- \frac{3}{4}

\frac{- 4}{3}

f (x) = 1 - x + x^{2} - x^{3} + . . . - x^{99} + x^{100}

f' (1)

y = \sqrt{x} + \frac{1}{\sqrt{x}}

\frac{d y}{d x}

\frac{1}{2}

\frac{1}{\sqrt{2}}

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