In the product of (^ 2-mx + 1) (X-2), if the coefficient of two terms of X is 0, then the value of M is zero

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• 1. If the quadratic coefficient of X in the product of [x & sup2; - MX + 1] [X-2] is zero, then the value of M is [] Good play + 20
• 2. It is known that the sum of the first three terms of the arithmetic sequence {an} is - 3, and the product of the first three terms is 8
• 3. It is known that the sum of the first three terms of the arithmetic sequence {an} is - 3, and the product of the first three terms is 8 (1) The general term formula of {an} (2) A3 & # 178; = a2a1, find the sum of the first n terms of the sequence {| a}
• 4. Known sequence 1,5,9 The general formula of 101 is an; arithmetic sequence 3,5,9,15 The general term formula of 105 is BN to find the same term of {an} and {BN}
• 5. Given that the first three terms of the arithmetic sequence are A-1, a + 1 and a + 3, what is the general term formula of the sequence?
• 6. If the first three terms of the arithmetic sequence an are A-1, a + 1 and 2a-3 respectively, then the general term formula of this sequence is?
• 7. When n is a natural number, 1, 2, 3, 4 2n denotes______ Number, 2N-1______ Count
• 8. It is known that the tolerance of {an} is 1, and a1 + A2 + +A98 + A99 = 99, then A3 + A6 + A9 + +a96+a99=? 55. I still don't understand.
• 9. The tolerance of arithmetic sequence an is 1, a1 + A2 + a3 + +A99 = 99, then A3 + A6 + A9 +A96 + A99 =? The answer is 66, RT
• 10. If A1 and A2 are known to be equal difference sequence and A1 = 10, their arithmetic mean is 53.5, then A13 is equal to I figured out 46, but every option was 46 a1 a2 a3 …… A30 is the arithmetic mean of arithmetic difference sequence
• 11. It is known that the factorization result of the quadratic trinomial ax + bx-2 of X is (x + 1) (x-C), and the value of ABC is obtained
• 12. The coefficient of quadratic term of quadratic function f (x) is a. and the solution set of inequality f (x) > 2x is (- 1.3). If f (x) = - 7a has two equal real roots, find the analytic solution of F (x)
• 13. If the quadratic equation x ^ 2 + 2 (M + 3) x + m ^ 2 + 3 = 0 has two real roots a and B, what is the minimum value of (A-1) ^ 2 + (B-1) ^ 2?
• 14. If x ^ 2 + 2 (M + 3) x + m ^ 2 + 3 = 0 has two real roots a and B, what is the minimum value of (A-1) ^ 2 + (B-1) ^ 2?
• 15. Finding the maximum or minimum value of quadratic trinomial 2x ^ 2 + 8x
• 16. Write a quadratic equation of one variable with quadratic coefficient 1 and two equal real roots
• 17. Given that x2 + ax-12 = 0 can be decomposed into the product of the first-order factors of two integral coefficients, then the number of qualified integers a is______ ．
• 18. There are () integers n between 1 and 1990, which can make x 2 + x-3 n decompose into the product of two integral coefficients A. 1990B. 75C. 50D. 44
• 19. How many integers are there between 1 and 100 that can decompose x ^ 2 + x-n into the product of two factors (). Choose a: 0 B: 1 C: 2 D: 9 e: 10
• 20. When factoring a quadratic trinomial, student a misinterprets the coefficient of the first term and decomposes it into 2 (x-1) (X-9), while student B misinterprets the constant term and decomposes it into 2 (X-2) (x-4). Please judge the correct quadratic trinomial and decompose it correctly