For rational numbers x and y, define an operation "*": X * y = ax + by, where a and B are constants, and the right side of the equation is the usual addition and multiplication operation. Given 1 * 2 = 8, (- 2) * 3 = 5, find the value of 3 * 5

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• 1. For rational numbers x and y, a new operation x * y = ax + by + C is defined, where a, B and C are constants. On the right side of the equation are the usual addition and multiplication operations. Given that 1 * 2 = 9, (- 3) * 3 = 6, 0 * 1 = 2, find the value of (- 2) * 5
• 2. Define the operation ⊙ x ⊙ y = (1-x) (1-y) on R if the inequality (x-a) ⊙ (x + a)
• 3. When x is what kind of real number is the following, it makes sense in the range of real number ①√x²+1 Is the root X & # 178; + 1
• 4. What is the value of X 1. Root 6x 2. Radical - 1 / X 3. Radical radical - 3x-2 4. Radical - 2 (x + 3) &;
• 5. What is the value of X when the following expressions are meaningful in the range of real numbers? 3 / 2x + 5 under root, X-3 under the root plus 3-x under the root The square of - A under the root sign 2x-1 / 2x-3 under radical The first one is not very clear 3 / (2x + 5) under root
• 6. What is the value of X Radical X & # 178; - 2x + 3
• 7. When the value of √ x-3 + √ 4-x x is what, the following expressions are meaningful in the range of real numbers
• 8. When x is what value, the following expressions are meaningful in the range of real numbers? 1.√3-X 2. √ 1 / 2x-1
• 9. When x is a value, the following expressions are meaningful in the range of real numbers? 1.√-5x 2.√|x|+1 3. Cube of √ x 4.√3x 5.√6+2x²
• 10. When x is a value, the following expressions are meaningful in the range of real numbers?         √x 2.        √-x 3.             √x+2 4.      √1-2x 5         √3x+1 6 & nbsp; & nbsp; & nbsp; & nbsp; √ x 1 / 2 7 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; √ X-1 / 2 8      √x+1/x
• 11. For real numbers x and y, define an operation "△": X △ y = ax + by, where a and B are constants, and the operation on the right side of the equation is the usual operation of addition and subtraction Given that 3 △ 5 = 25 and 4 △ 7 = 38, then 1 △ 5=
• 12. It is known that the function f (x) on R satisfies f (x) = f (4-x), and the function f (x + 2) monotonically decreases in [0, + ∞). (1) find the solution set of the inequality f (3x) > F (2x-1); (2) let the solution set in (1) be a, and for any t ∈ a, the inequality x2 + (T-2) x + 1-T > 0 holds, and find the value range of real number X
• 13. The characteristics of the definition domain of odd and even functions
• 14. What are the characteristics of the definition field of the function with parity? What are the characteristics of its domain?
• 15. Write out the parameter equation of a straight line passing through the point, m (1,5), with an inclination angle of 60 ° and find the distance from the intersection of this straight line and the line x-y-2 with sign 3 = 0 to M
• 16. A straight line is drawn through the point P (3,2) so that the distance between a (2,3), B (4, - 5) and it is equal. Then the equation of this straight line is_______ .
• 17. If the line L passes through point P (1,2) and the distances between M (2,3), n (4, - 5) are equal, then what is the equation of line l A. 4X + y-6 = 0 b.x + 4y-6 = 0 c.3x + 2y-7 = 0 or 4x + y-6 = 0 d.2x + 3y-7 = 0 or x + 4y-6 = 0
• 18. Find the straight line equation which passes through point P (1,2) and makes the distance from a (2,3), B (0, - 5) equal
• 19. Find the straight line equation which passes through point P (1,2) and makes the distance from a (2,3), B (0, - 5) equal
• 20. If the line L passes through the points a (- 1,2) and B (- 1,5), calculate the inclination angle of the line L