题目内容
下列去括号中,错误的是
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A.5a2-(a-2b+3c)=5a2+2b-3c-a
B.2m+(-n+p)-(3t-m2)=2m-n+p-3t+m2
C.6x2-2(3x+6)=6x2-6x-6
D.-(a+b)-(-a2+b2)=-a-b+a2-b2
A.2x2-(x-3y+5z)=2x2-x+3y-5z
B.5a2+(-3a-b)-(2c+3d)=5a2+3a+b-2c-3d
C.2x2-3(x-6)=2x2-3x+18
D.-(x-2y)-(-x2+y2)=-x+2y+x2-y2