计算:2(4x-0.

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计算:2(4x-0.计算:2(4x-0.计算:2(4x-0.2(4x-0.5)=8x-1=2(-2)=-4=2×(-2)=-42x2=4

计算:2(4x-0.
计算:2(4x-0.

计算:2(4x-0.
2(4x-0.5)
=8x-1

=2(-2)
=-4

=2×(-2)
=-4

2x2=4