Given that x = 2 is the solution of equation 6x-3x + 4 = 0, find the square of m-2m

Is 6x-3x + 4 = 0 incomplete?

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1. 0.4x + 7 * 3 = 69 solved by equation Please don't be brief
2. Solving equation 25 × 0.36 = 15 + 25% X
3. The sum of the three numbers is 114. If the three numbers are the first, fourth and 25th items of an arithmetic sequence in the previous order, then the sum of the numbers on each bit of the three numbers is?
4. Roll three regular hexahedral dice marked with 1, 2, 3, 4, 5 and 6 at the same time, and the numbers are a, B and C respectively. Then the probability that a, B and C are exactly the three sides of a right triangle is () A. 16B. 112C. 136D. 536
5. 24:00: 3, 2, - 2, 1 (power can be used)
6. Given that one root of the equation x-6x + m-2m + 5 = 0 is 2, find the other root and the value of M
7. 3x (2x-2) = 12, simple equation to calculate, and check calculation Simple equation to calculate, and check! Urgent
8. Solution equation: 25 * 0.36 = 1.5 + 25% X
9. The three numbers are arranged in the order of equal ratio sequence, the sum of which is 114. These three sequences are the first, the fourth and the 25th items of an arithmetic sequence in the order before. It is proved that B25 = 8b4-7b1
10. If three regular hexahedral dice marked with 1, 2, 3, 4, 5 and 6 are rolled at the same time, and the numbers are a, B and C respectively, what is the probability that a and B. C are exactly the three sides of a right triangle Another question: a school is going to organize teachers and students to watch Beijing ball games. There are three games in different periods of time, two of which are table tennis games and one is badminton games. If you choose any of the two games, what is the probability that the two games are table tennis games
11. Self made a rational number mixed operation problem and solution, requires the addition, subtraction, multiplication, division, the power of undocumented operation; divisor is negative; equal to 2012
12. A seven digit password composed of 123456
13. Four real numbers are known, the first three are equal difference sequence, the last three are equal ratio sequence, the sum of the middle two numbers is 10, and the difference between the fourth number and the first number is 36 Find the fourth number
14. The solution equation is: 1) X-1 of 2x-1 + 5x-8 of 1-2x = - 3 (2) 3-x of 1-x - 7-x of 5-x = 1 - X & # 178; - 8x + 7 of 7 x²-2
15. How to check the equation 4x-18 times 2 = 20
16. If the equation 25 - | x + 1 | - 4 × 5 - | x + 1 | = m has real roots, then the value range of real number m is () A. m＜0B. m≥-4C. -4≤m＜0D. -3≤m＜0
17. 9 times the square root of 10 ^ 4
18. 123456 make up two three digit numbers. Each number can only be used once. What is the minimum difference between the two three digit numbers?
19. There are four real numbers. The first three numbers form an equal ratio sequence, and their product is - 8. The last three numbers form an equal difference sequence, and their product is - 80
20. Solution equation: 8x-2.8 = 40-x