根据题意得:9a2-3a+8+3a=9a2+8,
故选A
减3a等于9a2-3a+8的代数式是( ) A.9a2+8 B.9a2-6a+8 C.9a2-8 D.9a2-6a-8
减3a等于9a2-3a+8的代数式是( )
A. 9a2+8
B. 9a2-6a+8
C. 9a2-8
D. 9a2-6a-8
A. 9a2+8
B. 9a2-6a+8
C. 9a2-8
D. 9a2-6a-8
数学人气:836 ℃时间:2020-06-14 15:31:22
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