Equations √ x + √ y = 9 √ xy = 20

√X+√Y=9 —＞（√X+√Y）²=9² —＞ X+Y+2√XY=81—＞X+Y+40=81—＞X+Y=41
√XY=20 —＞（√XY）²=20² —＞XY=400
X = 16,25, y = 25,16

RELATED INFORMATIONS

1. Solve the equations x * 2 + y * 2 + X + y = 18, X * 2 + XY + y * 2 = 19
2. Solving equations: (x + y + Z = 24, X / y = Z, XY + Z = 68) X+Y+Z=24 X/Y=Z XY+Z=68 Note: XY is x times y, X / y is x divided by y If there is only a solution, I can work it out
3. Solve the equations 24 / (x + y) + 24 / (X-Y) = 7 / 3, 8 / (x + y) + 18 / (X-Y) = 4 / 3
4. Given that the system of equations 3x + y = 124x + ay = 2 has positive integer solution (a is an integer), find the value of A In two ways,
5. Given that the system of equations {3x + y = 12 has positive integer solution (a is an integer), find the value of A. 4x + ay = 2
6. Given that the system of equations 3x + y = 124x + ay = 2 has integer solution (a is an integer), find the value of A Pay attention to the topic, answer quickly, in a few minutes!
7. Given x + y = 2, xy = - 2, then the value of (1-x) (1-y) is () A. -1B. 1C. 5D. -3
8. All integer solutions of Diophantine equation 2 (x + y) = XY + 7 are______ ．
9. To find the general solution of the differential equation y '= (XY + y) / (x + XY), I don't know how to calculate y + ln | y | = x + ln | x | + C This is the answer Ye ^ y = Xe ^ X
10. It is known that the solutions of X + y = m and 5x + 3Y = 31 are nonnegative, and the value of integer m is obtained Get the value
11. How to solve the system of equations x + y = 7, xy = 12
12. Solve the equations: xy = 6, y = x + 6
13. Solving equations: x ^ 2 + y ^ 2 = 37, xy = 6
14. If the solutions X and y of the system 3x = y + 32kx − (K − 1) y = 6 are opposite to each other, then K=______ ．
15. If the solutions X and y of the system 3x = y + 32kx − (K − 1) y = 6 are opposite to each other, then K=______ ．
16. Solve the equations 1. X + y + 5 = 0 2. XY + 14 = 0 x = y=
17. XY + YZ + ZX = 1, find x √ YZ + y √ ZX + Z √ XY Is less than or equal to
18. Given that the elements (x, y) in the set a correspond to the elements (x + y, X-Y) in the set B under the mapping f, then the elements (4, - 2) in the set B correspond to the elements (x + y, X-Y) in the set a__________ x+y=4, x-y=-2 x=1,y=3. (1,3) Why not the other way around? x+y=-2, x-y=4?
19. It is known that the set a = R, B = R +, F: a → B is a mapping from a to B. if f: X → 2x – 1, then the primitive image of element 3 in B is the process to be solved. Thank you It is known that the set a = R, B = R +, F: a → B is a mapping from a to B. if f: X → 2x – 1, then the primitive image of element 3 in B is To solve the process, thank you. What else is the original image
20. Let a = b = {(x, y) ｜ x belong to R, y belong to R}, mapping f ∶ a → B maps elements (x, y) in a to elements (X-Y, 2x + y) in B, Then under the mapping f, the corresponding element of element (1,2) in a in B is ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁