Matching method, how to match the X & # 178; + 3x + 5 = y matching method into vertex form
y=x²+3x+5
=(x+3/2)²+11/4
RELATED INFORMATIONS
- 1. Given that X and Y belong to R, and 3x ^ 2 + 2Y ^ 2 = 6x, find the maximum and minimum of X + y (require detailed answer)
- 2. If the value of 2Y's Square plus 3Y plus 7 is 8, what is the value of 4Y's Square plus 6y minus 9
- 3. Determine whether the circle x ^ 2 + y ^ 2-6x + 4Y + 12 = 0 is tangent to the circle x ^ 2 + y ^ 2-14x-12y + 14 = 0?
- 4. How to use cross multiplication to solve 3x ^ 2-14x-24 = 0?
- 5. 14x & # 178; - 26x + 12 = cross multiplication factorization factor
- 6. What is the minimum value of x square + 14x + 50? What is the x value at this time
- 7. It is known that - 7 ≤ x < 1, try to simplify: radical X & # 178; + 14x + 49 - radical (1-x) 178 / 1-x
- 8. Given x 2-3x-5 = 0, find the value of X 3-14x + 5
- 9. 1. Simplify √ (X & # 178; - 10x + 25) - (√ (4-x)) 178; 2. Known function y = - X & # 178; + (3x-1) x-4 (X & # 178; + 1) The same demand, the same salary
- 10. Given a * a + b * b-6a-8b + 25 = 0, find the value of B / A-A / b
- 11. The parabola y = ax & # 178; + C passes through two points a (2,1), B (- 1, - 5), finds the expression of the parabola, and points out the opening direction and vertex coordinates of the parabola
- 12. Given that the opening direction and size of a parabola are the same as the parabola y = 3x & # 178;, and the vertex is the same as the parabola y = x & # 178; + 2, the analytic formula of the parabola is obtained
- 13. If the parabola y = - 3x2-6x + 5 is known, then its vertex coordinates are______ .
- 14. Let a be greater than B and greater than 0, and the square of a + the square of b-6ab is equal to 0, then the square of a + the square of B-A is 0
- 15. Let a be greater than B and greater than 0, and the square of a plus the square of B is equal to 6ab
- 16. Let a and B be positive real numbers, and prove: 1 / 2 of a + 1 / 2 of B + ab
- 17. If AB is a real number and B = 2010, the square of change sign A-1 + the square of change sign 1-A + 2010, find the value of a-b
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- 19. Given that the real number AB satisfies AB = 1, then a square + 1 / 1 + b square + 1 / 1 is evaluated
- 20. Exercise 3. Known: as shown in the figure, a = D, ab ‖ DF, BC = EF, and the four points B, C, e and F are on the same line