The set of all real roots of equation X-2 = 0
x^2-2=0 ∴x=±√2
The set of all real roots of equation X-2 = 0 is {- √ 2, √ 2}
RELATED INFORMATIONS
- 1. Let the square of equation x equal to the set of all the real roots of X be B
- 2. The set of all the real roots of equation x's square-10x = 0
- 3. Why is it {0,1} Such as the title
- 4. On the solution of the equation x square + ax + B = 0 of X, when a and B satisfy what conditions, the solution of the equation contains one element? Two elements? It needs to be detailed
- 5. If the solution of equation x2-5x + 6 = 0 and equation x2-x-2 = 0 is m, then the number of elements in M is () A. 1B. 2C. 3D. 4
- 6. The set a is composed of the solutions of the equation AX & sup2; - 2x + 1 = 0. If the set a is an empty set, the value range of the real number a is obtained X & sup2; is the square of X
- 7. The equation AX ^ 2 + 2x + 1 = 0 of X has at least one negative real root, and the value range of a is obtained
- 8. Given the function f (x) = AX2 + BX + C, f (- 3) = f (1) = 0, f (0) = - 3, we can find the solution set of the equation f (x) = 2x
- 9. Is the root of an equation a set or an element?
- 10. Given that a, B and X are positive numbers and LG (BX) · LG (AX) + 1 = 0, the value range of AB is obtained
- 11. In mathematics of the second grade of junior high school, we find the real number k, so that the roots of the equation KX & # 178; + (K + 1) x + (k-1) = 0 about X are integers
- 12. Given the set a = {x | X & # 178; + 2x-8 = 0} B = {x | X & # 178; + kx-k = 0} if a intersects B = B, we can find the value range of real number K
- 13. Given the set a = {χ|χ & # 178; + 3 χ - 4 = 0}, B = {χ & # 178; + (a + 1) χ - A-2 = 0}, if a ∪ B = a, find the value of real number a
- 14. Given the set a = {a + 2, (a + 1) 2, | a}, if 1 ∈ a, find the value of real number a
- 15. Given the set a = {x | X & # 178; + BX + C = 0} = {1,2}, try to find the value of real numbers B and C
- 16. Given the set a = {0,1,2,3,4,5,6,7,8,9}, B = {s | x ∈ a, y ∈ a, s = ㏒ XY, y ∈ a}, then the number of all elements in B is a.3b.4c.5d.6
- 17. The number of elements of set a = {x ∈ Z | y = 12x + 3, y ∈ Z} is () A. 4B. 5C. 10D. 12
- 18. Given the set a = {2, 3, 4}, B = {2, 4, 6, 8}, C = {(x, y) | x ∈ a, y ∈ B, and logxy ∈ n *}, then the number of elements in C is () A. 9B. 8C. 3D. 4
- 19. Y = 6 / x + 2, x, y ∈ Z, what is the number of elements in the set with all y values? Z stands for integer, please write the analysis process and solution
- 20. Given the set a = {x1,2,3,4,5,6}, for X contained in a, define s (x) as the sum of all elements in this subset x, and find the sum of all s (x) ditto