MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Expansion of (x+y)^2

If x∧ 2+1 / x...

Question

If x^2+1/x^2=7, then value of x+1/x is

Open in App

Solution

(x + 1/x)^2 = x^2 + 1/x^2 + 2
x^2+1/x^2=7,

(x + 1/x)^2 = 9

x + 1/x = 3

Suggest Corrections

thumbs-up

7

Similar questions

x^{2} + \frac{1}{x^{2}} = 7

, then the values of

x + \frac{1}{x}

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

, then the value of

x^{7} + \frac{1}{x^{7}}

x - \frac{1}{x} = 7

then find the value of

x^{2} + \frac{1}{x^{2}} .

If X^2+1/X^2=7, then find the value of X^3-1/X^3

∣ ∣ ∣ ∣ ∣ \begin{matrix} x^{2} + x & 3 x - 1 & - x + 3 2 x + 1 & 2 + x^{2} & x^{3} - 3 x - 3 & x^{2} + 4 & 3 x \end{matrix} ∣ ∣ ∣ ∣ ∣ = a_{0} + a_{1} x + a_{2} x^{2} + . . . + a_{7} x^{7}

, then the value of

a_{0}

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

(x+y)^2

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Expansion of (x+y)^2

Standard VIII Mathematics

Join BYJU'S Learning Program

CrossIcon