Given that f (x) is a quadratic function and the image passes through a (2. - 3), B (- 2. - 7) and C (0. - 3), what is the analytic expression of F (x)

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• 1. The image of quadratic function passes through three points a (1 / 2,3 / 4), B (- 1,3), C (2,3),
• 2. We know that the image of quadratic function passes through three points a (1,3) B (- 1,5) C (2, - 1) I can't do my homework... Help me...
• 3. A quadratic function image through a (- 1.0) B (0.5) C (4.5) (1) find the analytic expression of quadratic function (2) find the quadratic function A quadratic function image passes a (- 1.0) B (0.5) C (4.5) (1) Finding the analytic expression of quadratic function (2) Finding the axis of symmetry and vertex coordinates of quadratic function (3) According to the image to answer what value x takes when x ≥ 0 (the image is three coordinates)
• 4. The image of quadratic function is known to pass through points a (1 / 2,3 / 4), B (- 1,3), C (2,3), and its analytical formula is______ ?
• 5. How to judge whether a, B and C in quadratic function image are greater than or less than or equal to 0
• 6. How to judge whether a, B and C are positive or negative or equal to 0 according to the image of quadratic function What's more, for example, how can you judge 4A + 3B + C according to the image
• 7. How to judge whether a + B + C.A + B-C 2a-c 2a-b is greater than zero if a graph of quadratic function is given
• 8. As shown in the figure, the image of quadratic function passes through the point a (- 1,0) B (4,0) C (0, - 2) to find the analytic expression of quadratic function, and judge whether the triangle ABC is true or not
• 9. In the selection of quadratic function, the question only gives the right or wrong of the conclusion. Do you need to find the quadratic function expression and ABC according to the image? Is there any other way to find it? What if the image of a quadratic function of a question is on the X and Y axes, but there are no coordinate points?
• 10. How to draw an elliptic equation with the Geometer's Sketchpad, it says to create one or more functions first,
• 11. The image of a given quadratic function f (x) passes through a (- 1,0) B (3,0) C (1, - 8) (1) find the analytic expression of F (x) (2) find the solution set of inequality f (x) ≥ 0
• 12. Given the image of quadratic function f (x) over a (- 1,0), B (3,0), C (1, - 8) To find the analytical formula, I calculate that f (x) = 2x ^ 2-4x-6. It's wrong to simplify x ^ 2-2x-3. What's the matter
• 13. Given the image over total a (- 1,0), B (3,0), C (1,8) of quadratic function f (x)
• 14. For example, if the graph is a graph of quadratic function, the equation AX2 + BX + C = 3 of X follows? The graph is the axis of symmetry, and the ordinates are 3, A0, C > 0
• 15. I want the detailed knowledge of quadratic function, and then add exercises with answers (otherwise I don't know right or wrong)~
• 16. The image of quadratic function in junior high school mathematics The image of quadratic function y = ax & # 178; + BX + C passes through the opening of (1,0) and (0,1), and the symmetry axis is on the left side of y-axis, and the minimum value of a & # 178; + B is obtained
• 17. Junior high school mathematics on the image of quadratic function urgent! A rectangular grassland is 10 meters long and 8 meters wide. Now build two intersecting (Note: not vertical) paths x meters wide. At this time, the lawn area is y square meters. Find the functional relationship between X and Y. (two ends of one path are in width, and two ends of the other path are in length) Please write down the calculation process! Thank you
• 18. A quadratic function knows how to find an expression for an image
• 19. Finding the analytic expression of quadratic function （-1,0),(3,0),(1,-5) How can I get the analytic expression
• 20. Several analytic expressions of mathematical quadratic function What general form, vertex form and so on. Be clear