Algebra

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

Result

f = (Correct answer is: 5x-x^2) Wrong answer

Solution:

f=xy f=x(5x) f=y(5y) f=5xx2f = xy \ \\ f = x(5-x) \ \\ f = y (5-y) \ \\ f = 5x-x^2



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

Following knowledge from mathematics are needed to solve this word math problem:

Next similar math problems:

  1. Expression with powers
    eq222_9 If x-1/x=5, find the value of x4+1/x4
  2. Evaluation of expressions
    eq222_10 If a2-3a+1=0, find (i)a2+1/a2 (ii) a3+1/a3
  3. Equation 23
    reciprocal_1 Find value of unknown x in equation: x+3/x+1=5 (problem finding x)
  4. Quadratic equation
    kvadrat_2 Find the roots of the quadratic equation: 3x2-4x + (-4) = 0.
  5. 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
  6. Product
    floring The product of two consecutive odd numbers is 8463. What are this numbers?
  7. Square root 2
    parabola_2 If the square root of 3m2 +22 and -x = 0, and x=7, what is m?
  8. Expressions 3
    parabola2_1 If k(x+6)= 4x2 + 20, what is k(10)=?
  9. Equation
    calculator_2 Equation ? has one root x1 = 8. Determine the coefficient b and the second root x2.
  10. Roots
    parabola Determine the quadratic equation absolute coefficient q, that the equation has a real double root and the root x calculate: ?
  11. Discriminant
    Quadratic_equation_discriminant Determine the discriminant of the equation: ?
  12. Quadratic equation
    parabola_1 Solve quadratic equation: 2x2-58x+396=0
  13. 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?
  14. Coefficient
    gp Determine the coefficient of this sequence: 7.2; 2.4; 0.8
  15. 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?
  16. Blocks
    cubes3_1 There are 9 interactive basic building blocks of an organization. How many two-blocks combinations are there?
  17. PIN - codes
    pin How many five-digit PIN - code can we create using the even numbers?