化简（4x²-5x+3)-(2x²-x+5)

化简（4x²-5x+3)-(2x²-x+5)
化简（4x²-5x+3)-(2x²-x+5)

化简（4x²-5x+3)-(2x²-x+5)
（4x²-5x+3)-(2x²-x+5)
=4x²-5x+3-2x²+x-5
=2x²-4x-2
=2(x²-2x+1)-4
=2(x-1)²-4
=2(x-1-√2)(x-1+√2)

（4x²-5x+3)-(2x²-x+5)
=4x²-5x+3-2x²+x-5
=2x²-4x-2
=2(x²-2x-1)

（4x²-5x+3)-(2x²-x+5)
=4x²-5x+3-2x²+x-5
=2x²-4x-2
=2(x²-2x-1)
=2(x-1)²

（4x²-5x+3)-(2x²-x+5)
=4x²-5x+3-2x²+x-5
=2x²-4x-2


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