If the equation MX + 3-nx − 3 = 8xx2 − 9 holds for any x (x ≠ ± 3), then Mn = () A. 8B. -8C. 16D. -16

From the meaning of the question: (m − n) x − 3 (M + n) x2 − 9 = 8x2 − 9, and the equation MX + 3-nx − 3 = 8xx2 − 9 holds for any x (x ≠ ± 3)}, we can get: M-N = 8, - 3 (M + n) = 0, the solution is: M = 4, n = - 4, Mn = - 16

RELATED INFORMATIONS

1. If the equation MX + 3 − nx − 3 = 8xx2 − 9 holds for all real numbers x except ± 3, then the value of Mn is () A. 8B. -8C. 16D. -16
2. Given the function f (x) = ㏒ 1 / 2 [(1 / 2) ^ X-1], it is proved that the function f (x) increases monotonically in the domain of definition
3. Given Mn ^ 2 = - 5, find the value of - Mn (m ^ 3N ^ 7-m ^ 2n ^ 5-N)
4. Given that M is reciprocal to each other, find - 2 (mn-3m ^ 2) + (mn-m ^ 2) - 2mn-2
5. Given the length of the line Mn 6 points m (1. - 3) endpoint n, find the coordinates of N on X Need specific process
6. The position of rational numbers a and B on the number axis is shown in the figure, then the value of a + B ()
7. Given 1 / M + 1 / N = 1 / 6 1 / N + 1 / P = 1 / 9 1 / P + 1 / M = 1 / 15, we can find the value of MNP / Mn + NP + PM
8. The position of rational number a, B and C on the number axis is shown in the figure to find | a + B | + | B + C | - | 2b-a| The number axis looks like this ——B -- C -------- 0 -------- a -------- X this is the positive direction
9. 12/（4x²-1）+1=2x+3/1-2x
10. The second day of junior high school· x-4/x-5 + x-8/x-9 = x-7/x-8 +x-5/x-6 Simple calculation method
11. If M = 2 - √ 3, n = √ 3 - √ 2, then the size relation of Mn is
12. If M-N = - 3 Mn = 2, then (- 5m + 2) - 5 (2mn-n)= If M-N = - 3 Mn = 2, then (- 5m + 2) - 5 (2mn-n)=
13. If (M + 2) x | m | - 1 + 8 = 0 is a linear equation with one variable, then M=______ ．
14. If m.n is the root of the linear equation with one variable, then m square n + Mn square - Mn =?
15. Solving the equation mnx & sup2; - (M & sup2; + n & sup2;) x + Mn = 0 (Mn ≠ 0)
16. As shown in the figure, we know that m (m, m ^ 2), n (n, n ^ 2) are two different points on the parabola C: y = x ^ 2, and m ^ 2 + n ^ 2 = 1, M + n ≠ 0, l is the vertical bisector of Mn Let the equation of ellipse e be x ^ 2 / 2 + y ^ 2 / a = 1 (a > 0, a ≠ 2) 1. When m and N move on the parabola C, find the value range of the slope k of the straight line L 2. It is known that line L and parabola C intersect at two different points a and B, and l and ellipse e intersect at two different points P and Q. let the midpoint of AB be r, and the midpoint of PQ be s. if vector or · vector OS = 0, the range of eccentricity of E can be calculated
17. It is proved that the necessary and insufficient condition for an image of a linear function y = - M / NX + 1 / N to pass through the first, second and fourth quadrants at the same time is Mn 〉 0 It is proved that the necessary and insufficient condition for an image of a linear function y = - M / NX + 1 / N to pass through the first, second and fourth quadrants at the same time is Mn 〉 0
18. Given that a and B are opposite numbers, B ≠ 0, m and N are reciprocal, and the absolute value of S is 3, the value of a / b (B of a) + Mn + s is obtained How to do this problem pinch? Who can tell me class?. 555. Urgent... Please!
19. F (x) = sin (n π - x) cos (n π + x) / cos ((n + 1) π - x) * Tan (x-n π) * cot (n π / 2 + x), find the value of F (π / 6)
20. Given - M + 2n = 5, then 3 (m-2n) ^ 2 + 10n-5m-23?