# Expression with powers

If x-1/x=5, find the value of x

^{4}+1/x^{4}**Result****Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):**

**Showing 0 comments:**

**Be the first to comment!**

#### To solve this example are needed these knowledge from mathematics:

## Next similar examples:

- Algebra

X+y=5, find xy (find the product of x and y if x+y = 5) - Evaluation of expressions

If a^{2}-3a+1=0, find (i)a^{2}+1/a^{2}(ii) a^{3}+1/a^{3} - Square root 2

If the square root of 3m^{2}+22 and -x = 0, and x=7, what is m? - Expressions 3

If k(x+6)= 4x^{2}+ 20, what is k(10)=? - Holidays - on pool

Children's tickets to the swimming pool stands x € for an adult is € 2 more expensive. There was m children in the swimming pool and adults three times less. How many euros make treasurer for pool entry? - Coefficient

Determine the coefficient of this sequence: 7.2; 2.4; 0.8 - Combinations

From how many elements we can create 990 combinations 2nd class without repeating? - Variations 4/2

Determine the number of items when the count of variations of fourth class without repeating is 600 times larger than the count of variations of second class without repetition. - Quadratic equation

Find the roots of the quadratic equation: 3x^{2}-4x + (-4) = 0. - Discriminant

Determine the discriminant of the equation: ? - Roots

Determine the quadratic equation absolute coefficient q, that the equation has a real double root and the root x calculate: ? - Equation

Equation ? has one root x_{1}= 8. Determine the coefficient b and the second root x_{2}. - Product

The product of two consecutive odd numbers is 8463. What are this numbers? - Quadratic equation

Solve quadratic equation: 2x^{2}-58x+396=0 - Elimination method

Solve system of linear equations by elimination method: 5/2x + 3/5y= 4/15 1/2x + 2/5y= 2/15 - Theorem prove

We want to prove the sentense: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started? - Teams

How many ways can divide 16 players into two teams of 8 member?