化简 (2x-1)(2x+1)-(4x+3)(x-1)
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化简(2x-1)(2x+1)-(4x+3)(x-1)化简(2x-1)(2x+1)-(4x+3)(x-1)化简(2x-1)(2x+1)-(4x+3)(x-1)(2x-1)(2x+1)-(4x+3)(x-
化简 (2x-1)(2x+1)-(4x+3)(x-1)
化简 (2x-1)(2x+1)-(4x+3)(x-1)
化简 (2x-1)(2x+1)-(4x+3)(x-1)
(2x-1)(2x+1)-(4x+3)(x-1)
=(4x²-1)-(4x²-x-3)
=4x²-1-4x²+x+3
=x+2
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
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