Given a ^ 2 + 3a-1 = 0, find the value of 3A ^ 3 + 10A ^ 2 + 2011

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• 1. Given a = - 1 / 3, find the value of - 3 (2a-3a ^ 3 = 5) - 5 (3 / 5a-9 / 10A ^ 3 = 3)
• 2. Factorization: (do me a favor) (1)9（x+2）2-25（x+3）2 （2）a3-2a2b+ab2 （3）（ab+b）2-（a+b）2 （4）1-a2-4b2+4ab
• 3. Factorization: - 8a2-4a2b + 2Ab 8a（x-y）2-4b（y-x）
• 4. Square of (a + 8a) + 22 (a + 8a) + 120 factorization
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• 6. 1. When x takes what value, the value of the algebraic formula 2x-1 is smaller than that of the algebraic formula 5x + 6 by 1? 2. Solve the equation AX + 2 = 3x-3 (a is not equal to 3). Thank you, I want to be accurate
• 7. Given that C is a constant, the opposite number of a root of the equation x & sup2; - 3x + C = 0 about X is a root of the equation x & sup2; + 3x-c = 0 It's worth it. Thank you Find the root of the equation x & sup2; - 3x + C = 0 and the value of C.
• 8. To make a cuboid water tank without a cover, the side length of the bottom of the water tank is 6 decimeters square, 2 meters, which is necessary to make such a water tank (Continued) how many square decimeters of iron sheet? How many liters of water can it hold? (note conversion)
• 9. To make a square bottomless water tank with a volume of 256l, what's its height and material saving?
• 10. A cuboid water tank, the bottom is square, the water tank is 5 decimeters high, its four side area of a total of 200 square decimeters, the water tank can hold how many kilograms?
• 11. Given a 2-3a + 1 = 0, find the value of (a + 1 / a 2-2) 1 / 2 I translate it in Chinese Is a square - 3A + 1 = 0 find the root sign [(a + 1) divided by (a square - 2)]
• 12. There is a fence with a length of 100 meters, which is used with a wall of the house (assuming that the wall is long enough) to form a vegetable garden (rectangle) as shown in the figure. The width of the vegetable garden is t meters 1. The area of vegetable garden is expressed by the algebraic formula containing t 2. When t = 30m, calculate the area of vegetable garden 3. Use the computer to explore, when t takes what number, the algebraic expression in question 1 takes the maximum value, what is the maximum value you explore? Briefly write down your exploration process or guess
• 13. 1： (X & sup2; + 1) y & sup2; - X & sup2; - 1 2： - 49x & sup2; + 14x-1 + Y & sup2;
• 14. 1. If 1 / 2A & sup3; B + M = 1 / 2Ab (n + 2b), then M=____ ,N=____ . Can 2.99 & sup3; - 99 be divided by 100? What do you think? Talk with your partner
• 15. Given the square of m-mn = 1, the square of 4mn-3n = - 2, find the square of M + the square of 3mn-3n
• 16. m^2-4mn+3n^2= We need to decompose factors by formula method
• 17. Junior high school mathematics questions for positive integer n formula (3N + 1) (3n-1) - (3-N) (3-N) value is not a multiple of 10, try to explain the reason
• 18. What is the solution of 8 = 4A + 2B + C0 = a + B + C0 = 4a-2b + C
• 19. The perimeter of a rectangle is 4A + 3b, one side is 2A + B-1, and the other side is 2A + B-1? 5(x-y)+3(x-y)-7(x-y)
• 20. The length of the rectangle is (3a + 2b) meters, and the length is (a-b) meters more than the width