给下列式子去括号,正确的是( )
A.a-(2b-3c)=a-2b-3c |
B.x3-(2x2+x-1)=x3-2x2-x-1 |
C.a3+(-2a+3)=a3+2a+3 |
D.3x3-[2x2-(-5x+1)]=3x3-2x2-5x+1 |
给下列式子去括号,正确的是( )
A.a-(2b-3c)=a-2b-3c |
B.x3-(2x2+x-1)=x3-2x2-x-1 |
C.a3+(-2a+3)=a3+2a+3 |
D.3x3-[2x2-(-5x+1)]=3x3-2x2-5x+1 |
试题篮
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