X的三次方减2x平方减x-2÷x-2的差等于多少?
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(1)x³-2x²-x-2÷x-2
=x³-2x²-x-2/x-2
=x³-2x²-x-2-2/x
(2)x³-2x²-x-2÷(x-2)
=x³-2x²-x-2/(x-2)
(3)(x³-2x²-x-2)÷x-2
=x²-2x-1-2/x-2
=x²-2x-3-2/x
(4)(x³-2x²-x-2)÷(x-2)
=[(x³-2x²)-(x+2)]÷(x-2)
=[x²(x-2)-(x+2)]÷(x-2)
=x²-(x+2)/(x-2)
=x²-1-4/(x-2)
(1)x³-2x²-x-2÷x-2
=x³-2x²-x-2/x-2
=x³-2x²-x-2-2/x
(2)x³-2x²-x-2÷(x-2)
=x³-2x²-x-2/(x-2)
(3)(x³-2x²-x-2)÷x-2
=x²-2x-1-2/x-2
=x²-2x-3-2/x
(4)(x³-2x²-x-2)÷(x-2)
=[(x³-2x²)-(x+2)]÷(x-2)
=[x²(x-2)-(x+2)]÷(x-2)
=x²-(x+2)/(x-2)
=x²-1-4/(x-2)
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