If the quadratic equations 3x-7 = 0, 2x + 3y-1 = 0 and 2x + y-m = 0 have common solutions, then the value of? Is?

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• 1. The third power of a * the third power of 2A * the third power of 3A
• 2. It is known that the solution of binary linear equations ax by = 6, BX + ay = 17 is x = 4, y = 3, then a = B=
• 3. Xiao Ming and Zhang Fan solve a system of quadratic equations ax + by = 16 (1) BX + ay + 1 (2) Xiao Ming miscopies equation 1 and obtains the solution as x = - 1, y = 3 Zhang Fan copied equation 2 wrong and got the solution as x = 3, y = 2
• 4. Xiao Ming and Xiao Wen solve a system of linear equations of two variables {cx-3y = - 2 ax + by = 2, Xiao Ming correctly solves x = 1 y = - 1, and Xiao Wen wrongly copies the solution of C to get x = 2 y = - 6 It is known that there is no other error except for copying error C in Xiaowen. Find the value of a + B + C
• 5. On the system of equations 2x-my = 25, x = 3Y of X, y, the solution is a positive integer
• 6. Given the solution x = 4 y = - 3 of the system of linear equations x + my = 4 NX + 3Y = 2, we can find the value of M + n
• 7. It is known that the solution of the system of linear equations y + my = 4 NX + 3Y = 2 with respect to x, y is x = 1, y = - 3, and the value of M + n is obtained
• 8. It is known that the correct solutions of the binary linear equations ax-2by = - 1 and CX + y = 3 about X and y are x = 3 and y = - 1, but student a misread C when doing the problem, and the solution is X = - 1 and y = 3, find the value of a and C
• 9. It is known that the solution of the system of equations ax + by = 5, cx-2by = 8 is x = 5, y = - 3. A classmate misread the value of C, and the solution is x = - 3, y = 3. Try to determine the value of a, B and C
• 10. If the solutions of the binary linear equations {ax + 2by = 4, x + y = 1} and {X-Y = 3, BX + (A-1) y = 3 are the same, the values of a and B are obtained
• 11. a. If B is a positive number and the equation x square + 2bx + a = 0 and x square + ax + 2B = 0 have a common root on the X axis, what is the minimum value of a square + b square
• 12. Given that two equations x2 + 2bx + a = 0 and X2 + ax + 2B have and only have one common root, then the minimum value of A2 + B2 is
• 13. Let X and y be the two real roots of the equation m2-2am + A + 6 = 0, then the minimum value of (x-1) 2 + (Y-1) 2 is () A. -1214B. 18C. 8D. 34
• 14. Let X and y be the two real roots of the equation m2-2am + A + 6 = 0, then the minimum value of (x-1) 2 + (Y-1) 2 is () A. -1214B. 18C. 8D. 34
• 15. Let X and y be the two real roots of the equation m2-2am + A + 6 = 0, then the minimum value of (x-1) 2 + (Y-1) 2 is () A. -1214B. 18C. 8D. 34
• 16. If n (n ≠ 0) is the root of the equation x2 + MX + 2n = 0, then the value of M + n is () A. 1B. 2C. -1D. -2
• 17. If the real number m, n satisfies the relation m + n = 4, find the minimum value of m ^ L2 + n ^ 2
• 18. If XY < 0, then the absolute value of X in X + the absolute value of Y in Y is () a, 0 B If XY < 0, then the absolute value of X in X + the absolute value of Y in Y is () A,0 B,2 C,－2 D,1
• 19. If the set {x, XY, LG (XY)} = {absolute value x, y, O}, find the value of log (x ^ 2 + y ^ 2)
• 20. Given a = {x, XY. X minus y} B = {0, absolute value x, y} and a = B, find x, y RT has been calculating for a long time, but I can't work it out