Solution set of equation x square + 4x + 4 = 0

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1. The square of 4x - 49 = 0 is solved by factorization
2. The square of 4x-6x-3 = 0
3. X squared-4x-9996
4. 3 (x square-4x) square-48 Factorization
5. Solve an inequality. 4x ^ 2 + 12x + 9 is less than or equal to 0 4X ^ 2 + 12x + 9 less than or equal to 0
6. 1/x^2+9/(4x^2-4)=1 ,
7. For the equation 2 (X-2) - 3 (4x-1) = 9 of X, the correct answer is () A. 2x-4-12x+3=9，-10x=9+4-3=10，x=1B. 2x-4-12x+3=9，-10x=10，x=-1C. 2x-4-12x-3=9，-10x=2，x=−15D. 2x-2-12x+1=9，-10x=10，x=1
8. Solution equation: 2 (X-2) - 3 (4x-1) = 9 (1-x)
9. When m is a value, the solutions X and y of the equations {6x + 2Y = 2m + 1,4x + 3Y = 11-M are all positive numbers!
10. 5 + 25sinx = 12cos ^ 2x, X is greater than or equal to 0 degrees and less than or equal to 360 degrees, find the sum of all results 5 + 25sinx = 12cos ^ 2x, X is greater than or equal to 0 degrees and less than or equal to 360 degrees, find the sum of all results,
11. The solution set of inequality x2-4x + 3 & lt; 0 is
12. How to solve the equation (5x + 1) × (4x + 1) - 5x × 4x = 38 + 53
13. 4x+0.5x-4.5×0.8=0
14. If the quadratic equation (a-5) x-4x-1 = 0 with respect to X has real roots, then what is the condition of a?
15. The solution of quadratic equation of one variable? X-1] - 3 [1-4x] - 4 = 0 is
16. If the increasing range of quadratic function y = AXX + BX + C is (- ~, 2), what is the decreasing range of quadratic function y = Bxx + ax + C? Please give me a detailed explanation. Thank you very much Functions are really hard,
17. Given that the increasing interval of quadratic function y = AX2 + BX + C is (- ∞, 2), then the increasing interval of quadratic function y = bx2 + ax + C is______ ．
18. There is such a problem: "the quadratic function y = AX2 + BX + C is known to pass P (1, - 4), and C = - 3a To prove the image of this quadratic function, we must pass the fixed point a (- 1,0) Can you find the quadratic function expression according to the information in the question? If you can, please ask; if you can't, please explain the reason; (2) according to the existing information, please Add an appropriate condition to complete the original question
19. It is known that the square of quadratic function y = ax + BX + C and a point of intersection coordinate of X axis is (8,0), and if x = 6 is y, it has the minimum negative value of 12, the analytic expression of quadratic function is obtained
20. The image of the function f (x) = ax Λ 2 + BX + C (a ≠ 0) is symmetric with respect to the line x = - B / 2A Come on, I'm going to class The solution set of numbers a, B, C, m, N, P with respect to the equation m [f (x)] Λ2 + NF (x) + P = 0 cannot be () a. {1,2} B {1,4} C {1,2,3,4} D {1,4,16,64}