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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
According to Weida's theorem, X1 + x2 = - K, X1 * x2 = 3
x1*x2=3=1x3=(-1)*(-3)
So k = 4 or - 4
The polynomial X & # 179; - 6x & # 178; y + 5xy & # 178; - 8y & # 179; + 1 is written as the sum of two integers, so that one of them does not contain the letter X:
（x³-6x²y+5xy²）+(-8y³+1)
RELATED INFORMATIONS
- 1. 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
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- 4. Remove the brackets from (x-4) - (- y + 2Z)______ [urgent]
- 5. How to fill in the brackets of X & # 178; + 1 / X & # 178; = (x + 1 / x) & # 178; - () = (x-1 / x) & # 178; + ()?
- 6. 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___ ．
- 7. It is known that the image of quadratic function y = x + bx-3 passes through the point (- 2,5)
- 8. 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___ ．
- 9. What is the solution of X & # 178; - 13X + 12 = - 4x & # 178; + 18?
- 10. x²+4x+3
- 11. Through the point (1, - 1), make the tangent of the circle x ^ 2 + y ^ 2-2x-2y + 1 = 0, and find the tangent equation
- 12. Given the equation x & sup2; + Y & sup2; + 2x-8y + 8 = 0 of a circle, the length of PA is Detailed answer process
- 13. Given that the equation of a circle is X & sup2; + Y & sup2; + 2x-8y + 8 = 0, the length of PA is an important process if P (2,0) is a tangent of the circle and the tangent point is a
- 14. Given the circle x ^ 2 + y ^ 2 + 2x-4y-1 = 0 and a point m (4, - 1) outside the circle, make the tangent of the circle through M, and the tangent points are D and E. calculate the length and length of the tangent
- 15. Let a (- 3,5), B (2, - 3) be on the line L: 3x-4y + 4 = 0, find a point P so that | PA | - | Pb | is the maximum, and find this value
- 16. If the line 2ax-by + 2 = 0 (where a and B are positive real numbers) passes through the center of the circle C: x2 + Y2 + 2x-4y + 1 = 0, then the minimum value of 4A + 1b is______ ．
- 17. Tangent equation of point a (2, - 6) on circle X & # 178; + Y & # 178; - 2x + 4y-4 = 0
- 18. The length of the major axis is twice the length of the minor axis, and it passes through the point (2, - 6), the center is at the origin, and the axis of symmetry is on the coordinate axis
- 19. It is known that the major axis of the ellipse is three times of the minor axis, and it passes through point a (3,0) and takes the coordinate axis as the axis of symmetry
- 20. Find the function y = root sign (1 + x), when x0 = 3, △ x = - 0.2 change amount △ y