Decomposition factor: M2 (m-1) - 4 (1-m) 2=______ ．

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• 1. Decomposition factor; (M + 1) square-9 (m-1) square It's a process
• 2. Given that the log is 0.3 B 2 to the power of 0.1 and C 0.2 to the power of 1.3, the size relation of the real number a B C is as follows
• 3. First order solution of one variable 1. After 1.5 hours of meeting, the two cars continue to drive for 0.8 hours. At this time, the bus is 19 kilometers away from the ground of B and the truck is 65 kilometers away from the ground of A ① How many kilometers more buses travel than trucks per hour? ② How many kilometers are there between a and B?
• 4. Let x = 2 be the solution of AX + by = 6, then 2a-3b-2=_______ y＝-3
• 5. 1. M power of a × n power of a (m, N, I am a positive integer) two Please fill in ">" < "or" = "on the line (1) The second power of 4 + the second power of 3______ 2x4x3 (2) The second power of (- 3) + the second power of 1_____ 2x(-3)x1 (3) The second power of (- 2) + the second power of (- 2)______ 2x(-2)x(-2) == and then mainly the following questions Through observation and induction, write a general conclusion that can reflect this law =The first problem is wrong, m, n is a positive integer And pay attention to the second question. Through observation and induction, we can draw a general conclusion that can reflect this law.
• 6. Two problems of mathematics in grade one of junior high school~ The current price of a certain brand of laptop is x yuan, which is 10% lower than that of last year______ (answer with polynomial) Let a B C denote an integral, and A-B = 3x square - 2x + 1, B-C = 4-2x square, then a-C=_________
• 7. The department store sold a commodity. In January, it sold a piece and made a profit of 30000 yuan 4 yuan, but the sales volume increased by 5000 pieces compared with January, so the profit was y yuan more than January (1) Finding the relation between Y and a=_________ )
• 8. When a = 3, ax + X-1 = 5, then when a = - 3, ax - X=__ Note: square is the square of X
• 9. There is a Z-shaped road ABCD in the park, in which ∠ B = ∠ C, there are three small stone benches e, m, f beside AB, BC, CD, and be = CF, M is the midpoint of BC. Try to explain the reason why the three stone benches e, m, f are just in a straight line
• 10. Junior one mathematics super problem! BD is the middle line of △ ABC, CE is perpendicular to BD at e, AF is perpendicular to BD, and the extension line of BD is at F. please specify: be + BF = 2bd
• 11. φ (x) = x ^ 4 + (2 - λ) x ^ 2 + 2 - λ, φ (x2) - φ (x1) = (x2 + x1) (x2-x1) (x2 ^ 2 + X1 ^ 2 + 2 - λ), what is the process of factorization What is the process,
• 12. If p2-p-1 = 0, 1-q-q2 = 0 and PQ ≠ 1, then the value of PQ + 1q is () A. 1B. 2C. 12D. 2−12
• 13. If P and Q are two real roots of the equation x2 + (m-2) x + 1 = 0, then (1 + P2 + MP) (1 + Q2 + MQ)=
• 14. Solve the equation about X: X2 - (P2 + Q2) x + PQ (P + Q) (P-Q) = 0
• 15. The earth is one of the most important planets in the solar system, but there is only life on the earth in the solar system. Do you know why?
• 16. Earth solar system Milky Way universe star star system which big
• 17. The earth we live on is a relatively small planet in the solar system
• 18. What are the characteristics of the planets and stars in the solar system
• 19. The earth is the home of human existence, it belongs to () A. Stars B. planets C. satellites D. comets
• 20. The three basic layers of the universe () a sun, earth and moon, B galaxies, stars and planets, C galaxies, stars and solar system, D earth, moon and satellites I think it should be B, but the answer is C. is the answer wrong,