当x=-3/2时求整式(2x-1)²-(3x+1)(3x-1)+5x(x-1)
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当x=-3/2时求整式(2x-1)²-(3x+1)(3x-1)+5x(x-1)
当x=-3/2时求整式(2x-1)²-(3x+1)(3x-1)+5x(x-1)
当x=-3/2时求整式(2x-1)²-(3x+1)(3x-1)+5x(x-1)
(2x-1)²-(3x+1)(3x-1)+5x(x-1)
=4x²-4x+1-9x²+1+5x²-5x
=2-9x
=2-9*(-3/2)
=15.5