化简:(2x-1)²-(3x+1)×(3x-1)-5x(1-x)=
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化简:(2x-1)²-(3x+1)×(3x-1)-5x(1-x)=化简:(2x-1)²-(3x+1)×(3x-1)-5x(1-x)=化简:(2x-1)²-(3x+1)×(
化简:(2x-1)²-(3x+1)×(3x-1)-5x(1-x)=
化简:(2x-1)²-(3x+1)×(3x-1)-5x(1-x)=
化简:(2x-1)²-(3x+1)×(3x-1)-5x(1-x)=
(2x-1)²-(3x+1)×(3x-1)-5x(1-x)
=4x²-4x+1-9x²+1-5x+5x²
=-9x+2
=4x²-4x+1-9x²+1-5x+5x²
=-9x+2
(2x-1)²-(3x+1)×(3x-1)-5x(1-x)
=4x²-4x+1-9x²+1-5x+5x²
=-9x+2