现规定一种新运算a※,b=ab+a-b,则1※(-2)=

2025-03-09 12:29:08
推荐回答(4个)
回答1:

1※(-2)
= 1×(-2) + 1 - (-2)
= -2 + 1 + 2
= 1

3*(-2)
= (-2)³
= -8
所以选C

回答2:

1※(-2)=1*(-2)+1-(-2)=1
选C
3*(-2)=(-2)^3=-8

回答3:

1※(-2)
解:原式=1×(-2)+1-(-2)
=-2+3
=1

3*(-2)
解:原式=(-2)³
= -8 所以选C

回答4:

(1)1 (2)D