What is the solution of X & # 178; - 13X + 12 = - 4x & # 178; + 18?

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• 1. x²+4x+3
• 2. The function y = - 2x ^ 2-4x + 3 is known. When the independent variable x is in the following value range, calculate the maximum or minimum value of the function respectively, and calculate the value of the function And find the value of the corresponding independent variable x when the function takes the maximum or minimum value
• 3. For the function y = 2x, when it is less than or equal to 2, the value range of Y is y____ 1 or Y_____ .
• 4. It is proved that no matter what the value of K is, there are two intersections between the line L: kx-y-4k + 2y-3 = 0 and the circle C: X & # 178; + Y & # 178; - 6x-8y + 21 = 0 It is proved that no matter what the value of K is, there are two intersections between the line L: kx-y-4k + 2y-3 = 0 and the circle C: X & # 178; + Y & # 178; - 6x-8y + 21 = 0
• 5. The center of the circle x ^ 2 + y ^ 2-4x + 2Y = 0 is () and the radius is ()
• 6. Given that the equation of a circle is x ^ 2 + y ^ 2 + 4x-2y + 3 = 0, then the center coordinates and radius of the circle are
• 7. Let - 5 belong to the set {xix2-ax-5 = 0}, then the sum of all elements in the set {x2-4x-a = 0} is? "
• 8. If there is only one element in the set a = {x | x2 + ax + 1 = 0}, then the value of a is () A. 0b. 0 or 2C. 2D. - 2 or 2
• 9. Let a = {x │ X2 - (a + 2) x + 2A
• 10. The known set a = {x | x2-4x + 2A + 6 = 0}, B = {x | x}
• 11. As shown in the figure, it is known that the image of quadratic function y = x2 + BX + C passes through points (- 1,0), (1, - 2). When y increases with the increase of X, the value range of X is___ ．
• 12. It is known that the image of quadratic function y = x + bx-3 passes through the point (- 2,5)
• 13. As shown in the figure, it is known that the image of quadratic function y = x2 + BX + C passes through points (- 1,0), (1, - 2). When y increases with the increase of X, the value range of X is___ ．
• 14. How to fill in the brackets of X & # 178; + 1 / X & # 178; = (x + 1 / x) & # 178; - () = (x-1 / x) & # 178; + ()?
• 15. Remove the brackets from (x-4) - (- y + 2Z)______ [urgent]
• 16. Mathematics problem of grade one 1. Add brackets in the polynomial m4-2m2n2-2m2 + 2n2 + N4; 【1】 Combine the four terms and put them in the brackets with "+" in front 【2】 Combine the quadratic terms and put them in the front with "-" 2. Given 2x + 3y-1 = 0. Find the value of 3-6x-9y 3. Let the quadratic power of X + xy = 3. The quadratic power of XY + y = - 2. Find the value of the quadratic power of 2x - xy-3y 4. Write the polynomial 10x ^ 3-7x ^ 2Y + 4xy ^ 2 + 2Y ^ 3-5 as the difference between two polynomials, that is, the subtraction does not contain the letter y 5. Add 2x ^ 2 + 3x-6 as required 【1】 Write the sum of a monomial and a binomial; 【2】 Write the difference between a monomial and a binomial 6. Write the polynomial x ^ 3-6x ^ 2Y + 12xy ^ 2-8y ^ 3 + 1. Into the sum of two integers, so that one of them does not contain the letter X 7. Let 3x ^ 2-x = 1. Find the value of 9x ^ 4 + 12x ^ 3-3x ^ 2-7x + 2000 By the way, let's talk about the rule of adding brackets
• 17. 1. Given that the solutions of equation 4x + 2m = 3x + 1 and equation 3x = 2m = 6x + 1 are the same, then M =? 2. If (7y-4 / 2) and (y + 2 / 5) - 2 are opposite to each other, then y =? 2? This is the two exercises of the equation of one variable of grade one in junior high school
• 18. The polynomial X & # 179; - 6x & # 178; + 12xy & # 178; - 8y & # 179; + 1 is written as the sum of two integers, so that one of them does not contain the letter X The polynomial X & # 179; - 6x & # 178; y + 12xy & # 178; - 8y & # 179; + 1 is written as the sum of two integers, so that one of them does not contain the letter X. Wrong question, sorry
• 19. It is known that the polynomial x ^ 2 + KX + 3 can be decomposed into the product of two first-order factors in the range of integers to find the value of K
• 20. Through the point (1, - 1), make the tangent of the circle x ^ 2 + y ^ 2-2x-2y + 1 = 0, and find the tangent equation