If 1 / X-1 / y = 5, then x-2xy-y / 4x + 3xy-4y
1/x-1/y=(y-x)/xy=5
y-x=5xy
x-y=-5xy
So the original formula = [(X-Y) - 2XY] / [4 (X-Y) + 3xy]
=[(-5xy)-2xy]/[4(-5xy)+3xy]
=-7xy/(-17xy)
=7/17
RELATED INFORMATIONS
- 1. If there is no XY term in the quadratic power of polynomial x + (2k-3) xy-3y + X-1, then k = ()
- 2. Let's know the quadratic of X - 6x + y + 8y + 25 = 0 and find the value of X3 power
- 3. The x power of 0.2 is known
- 4. X ^ 2 + y ^ 2 + 6x + 8y + 25 = 0, find the value of (x ^ 2) - (Y ^ 2)
- 5. Let's know that the absolute value of A-4 and the second power of (B + 1) are opposite to each other. Find the negative B power of a minus the a power of B. the second power of (B-A) minus the 25 power of B
- 6. The opposite number of the fourth power of 3 - the absolute value of the fifth power of (- 0.25) × the fifth power of 4 + (1 / 2-1 / 3) / (1 / 6) / - 2
- 7. What is the formula of adding the fourth power of a to the fourth power of B?
- 8. The third power formula of adding three numbers (a+b+c)^3=?
- 9. Given the function f (x ^ 2-3) = logx ^ 2 / x ^ 2-6, find the definition field of F (x)
- 10. Y = log [(1 / 3) ^ 2] x + 2log (1 / 3) x + 3 when 1 / 27 is less than or equal to X and less than or equal to 9, find the maximum and minimum value of the function
- 11. 1 / 2xy-4x square, y square + 4Y square - x cube arranged by X ascending power is?
- 12. If the solution of the equations 4x + y = K + 1x + 4Y = 3 satisfies the condition 0 < x + y < 1, then the value range of K is () A. -4<k<1B. -4<k<0C. 0<k<9D. k>-4
- 13. How to solve the equation system x square + 4x + 4Y square = 9; X square + xy = 0
- 14. Solve the equations {4x + 8 (x + y) = 480,4y + 9 (x + y) = 480
- 15. How to solve this system of equations with the square of X + the square of y-4x + 4y-1 = 0 and 3x-4y-4 = 0
- 16. Solve the system of equations x (x + 1) (3x + 4Y) = 144 x square + 4x + 4Y = 24
- 17. X square - 2XY + y square + 4x-4y + 4 Factoring it
- 18. 4 (square of x) + square of Y -- 4x -- 4Y + 5 = 0, X / Y -- y / x =?
- 19. Given y = 2-x, find the value of 4x + 4y-3
- 20. Given 4x ^ 2 + 4x + 3 = y ^ 2 + 4Y. Find the value of X-Y