The solution of the binary linear equations (X-Y = 9K, x y = 5K) of X and Y is also the solution of the quadratic equation 2x3y = 6, so we can find the value of K Can there be a process! X y = 5K is x + y = 5K, 2x 3Y is 2x + 3Y

RELATED INFORMATIONS

• 1. If the root sign 2x + y + x-2y = 0, find X & # 178; + Y & # 178;
• 2. If the real numbers x, y satisfy the equation 2x + x2 + x2y2 + 2 = - 2XY, then the value of X + y is () A. 1B. 0C. 1D. 2
• 3. No matter what the value of X is, the value of polynomial 2x ＾ 4-4x ＾ 2-1 is always greater than that of X ＾ 4-2x ＾ 2-4 Detailed process
• 4. The distance from a focus of hyperbola x2a2 − y2b2 = 1 (a > 0, b > 0) to an asymptote is () A. aB. bC. cD. b2
• 5. Xiao Ming accidentally landed the kite on the 4.8-meter wall when he was flying the kite. He asked his father to help him get it. His father moved the ladder and placed it stably (the distance between the low end of the ladder and the wall is about 1 / 3 of the length of the ladder). At this time, the top of the ladder just reached the wall. His father asked Xiao Ming if the length of the ladder is 5 meters? Can you help Xiao Ming calculate it together? Steps and formulas are required
• 6. C language, find the root of quadratic equation AX2 + BX + C = 0
• 7. -A is the opposite of a, so - a must be negative? A must be greater than - a? Please give an example
• 8. It is known that the discriminant of the equation x & # 178; - (M + 2) x-2n = 0 about X is equal to 0, and x = 1 / 2 is the root of the equation
• 9. Calculation: (2x + y + 1) (2x + Y-1)
• 10. ∫ cost / (Sint + cost) DT is integral from 0 to π
• 11. If the polynomial x2-3kxy-3y2 + 6xy-8 contains no XY term, then K=______ ．
• 12. If the polynomial x ^ 2 + 3kxy-3y ^ 2 + 6xy-8 contains no XY term, then K=_________
• 13. If the square of polynomial x + the square of (2k-3) xy-3y + X-1 contains no XY term, then k = ()
• 14. When k takes what value, the square of polynomial x-3 + 1 / 2xy-3y + 4kxy has no XY term
• 15. If the square of polynomial x-4kxy-3y + x-24 does not contain the XY term, then the square of k-1 = () (with process) If the square of polynomial x-4kxy-3y + x-24 contains no XY term, then the square of k-1 = () (with process),
• 16. If the square of polynomial x + 2 times the square of (k-1) XY + y, K does not contain the term of XY, the value of K is obtained If the square of polynomial x + 2 times the square of (k-1) XY + Y - K does not contain the term of XY, the value of K is obtained
• 17. Is x (x-1) + 2x (x + 1) - 3x (2x-5) a binomial multiplication polynomial?
• 18. [multiplication of polynomials by monomials (to complete the process!) 5x (x-1) - (2x + 3) (X-5)
• 19. How to judge polynomials and monomials? Do you want to combine similar terms? For example, are 5 + 9 and X + 2x monomials or polynomials? OK, we'll add more points. The minimum is 10 points. Even for soy sauce
• 20. The monomials that make up the polynomial 2x-x-3 are () A.2x,x,3 B.2x,-x,-3 C.2x,x,-3 D.2x,-x,3