Unknown number 7

Calculate unknown number whose 12th power when divided by the 9th power get a number 27 times greater than the unknown number. Determine the unknown number.

Result

x1 =  5.196
x2 =  -5.196

Solution:

x12/x9=27x x3=27x x2=27 x1=27=3 35.19625.196x^{ 12 }/x^9=27x \ \\ x^3=27x \ \\ x^2=27 \ \\ x_{1}=\sqrt{ 27 }=3 \ \sqrt{ 3 } \doteq 5.1962 \doteq 5.196
x2=27=3 35.19625.196x_{2}=-\sqrt{ 27 }=- 3 \ \sqrt{ 3 } \doteq -5.1962 \doteq -5.196

Checkout calculation with our calculator of quadratic equations.




Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!





Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:
1st comment
Be the first to comment!
avatar




Tips to related online calculators
Looking for help with calculating roots of a quadratic equation?
Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

Next similar math problems:

  1. Equation 23
    reciprocal_1 Find value of unknown x in equation: x+3/x+1=5 (problem finding x)
  2. Theorem prove
    thales_1 We want to prove the sentence: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?
  3. The product
    eq222 The product of a number plus that number and its inverse is two and one-half. What is the inverse of this number
  4. Roots
    parabola Determine the quadratic equation absolute coefficient q, that the equation has a real double root and the root x calculate: ?
  5. Product
    floring The product of two consecutive odd numbers is 8463. What are this numbers?
  6. Equation
    cubic How many real roots has equation ? ?
  7. Calculation
    pocty How much is sum of square root of six and the square root of 225?
  8. Expression with powers
    eq222_9 If x-1/x=5, find the value of x4+1/x4
  9. Holidays - on pool
    pool_4 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?
  10. Discriminant
    Quadratic_equation_discriminant Determine the discriminant of the equation: ?
  11. Square root 2
    parabola_2 If the square root of 3m2 +22 and -x = 0, and x=7, what is m?
  12. Algebra
    parabol_3 X+y=5, find xy (find the product of x and y if x+y = 5)
  13. Birthdays
    bonbons_1 In the classroom, students always give candy to their classmates on their birthdays. The birthday person always gives each one candy, and he does not give himself. A total of 650 candies were distributed in the class per year. How many students are in the
  14. Evaluation of expressions
    eq222_10 If a2-3a+1=0, find (i)a2+1/a2 (ii) a3+1/a3
  15. Solve 3
    eq2_4 Solve quadratic equation: (6n+1) (4n-1) = 3n2
  16. Quadratic equation
    kvadrat_2 Find the roots of the quadratic equation: 3x2-4x + (-4) = 0.
  17. Equation
    calculator_2 Equation ? has one root x1 = 8. Determine the coefficient b and the second root x2.