If the absolute value of a + 2 is + 2 + a = 0, find the value range of A The process also needs to be written

When a > = - 2, a + 2 + 2 + a = 0, a = - 2
When a

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1. If the absolute value of A-2 = 2-A, find the value range of A
2. If the absolute value of a is equal to negative a, what is the range of a?
3. Given a = {x, XY. X minus y} B = {0, absolute value x, y} and a = B, find x, y RT has been calculating for a long time, but I can't work it out
4. If the set {x, XY, LG (XY)} = {absolute value x, y, O}, find the value of log (x ^ 2 + y ^ 2)
5. If XY < 0, then the absolute value of X in X + the absolute value of Y in Y is () a, 0 B If XY < 0, then the absolute value of X in X + the absolute value of Y in Y is () A,0 B,2 C,－2 D,1
6. If the real number m, n satisfies the relation m + n = 4, find the minimum value of m ^ L2 + n ^ 2
7. If n (n ≠ 0) is the root of the equation x2 + MX + 2n = 0, then the value of M + n is () A. 1B. 2C. -1D. -2
8. Let X and y be the two real roots of the equation m2-2am + A + 6 = 0, then the minimum value of (x-1) 2 + (Y-1) 2 is () A. -1214B. 18C. 8D. 34
9. Let X and y be the two real roots of the equation m2-2am + A + 6 = 0, then the minimum value of (x-1) 2 + (Y-1) 2 is () A. -1214B. 18C. 8D. 34
10. Let X and y be the two real roots of the equation m2-2am + A + 6 = 0, then the minimum value of (x-1) 2 + (Y-1) 2 is () A. -1214B. 18C. 8D. 34
11. The absolute value of A-1 = - (A-1), and the value range of a is?
12. If the absolute value of a is divided into a = - 1, then the value range of a is () -1 means negative 1. Explain the reason
13. If the square of X is less than or equal to 1, then - 1 is less than or equal to x, then absolute value x is less than or equal to 2, then - 2 is less than or equal to x, and so on If the square of X is less than or equal to 1, then - 1 is less than or equal to X and less than or equal to 1 If the absolute value x is less than or equal to 2, then - 2 is less than or equal to X and less than or equal to 2
14. When 0 is less than x is less than 3, the absolute value of x minus 3 is equal to?
15. If the absolute value of X is x = - 1, then x is equal to
16. The opposite number of X is 5, the absolute value of Y is 8, find the value of X + y Tomorrow we have time to do our homework! Please!
17. Given that the absolute value of X is equal to 3, the absolute value of Y is equal to 4, and x > y, find the value of X and y
18. If | x-3 | + (y + 2) 2 = 0, then x + y=______ ．
19. If the equation AX + 2 = 5x + 3Y is a quadratic equation with respect to X and y, then a satisfies I have to do it
20. There are innumerable solutions to the bivariate linear equation kx-y = - 7, one of which must be () Because it has innumerable solutions, write the 100% answer