a※b+(b-a)※b,
=ab+a-b+(b-a)×b+(b-a)-b,
=ab+a-b+b2-ab+b-a-b,
=b2-b.
故选B.
现规定一种运算a※b=ab+a-b,其中a,b为实数,则a※b+(b-a)※b等于( ) A.a2-b B.b2-b C.b2 D.b2-a
现规定一种运算a※b=ab+a-b,其中a,b为实数,则a※b+(b-a)※b等于( )
A. a2-b
B. b2-b
C. b2
D. b2-a
A. a2-b
B. b2-b
C. b2
D. b2-a
数学人气:755 ℃时间:2019-11-05 21:13:39
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