Question

数学天才请进.本人有好多题不会做

Answer 1

|a|=11 |b|=17 ,则

a = 11 或 -11

b = 17 或 -17

因为 |a + b| = -（a + b）

所以 a = 11 ,b = - 17 或 a = -11 ,b = -17

当 a = 11 ,b = - 17 时 ,a - b = 28

当 a = -11 ,b = - 17 时 ,a - b = 6