For all integers a and b, the operation@is defined as a@b=(-a+b)(b+a). If a=2 an

游客2024-01-13 22

问题 For all integers a and b, the operation@is defined as a@b=(-a+b)(b+a). If a=2 and b=5, then b@a=

选项 A、25
B、-21
C、7
D、21
E、25

答案 B

解析 5@2=(-5+2)(2+5)=-21

转载请注明原文地址:https://tihaiku.com/zcyy/3360216.html

相关试题推荐

随机试题

最新回复(0)

Oceanographyhasbeendefinedas"Theapplicationofallsciencestothestu