下列多项式相乘,结果为x²+2x-8的是A.(x+4)(x-2)B.(x-4)(x+4)C.(x-4)(x-2)D.(x+4)(x+2)
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下列多项式相乘,结果为x²+2x-8的是A.(x+4)(x-2)B.(x-4)(x+4)C.(x-4)(x-2)D.(x+4)(x+2)
下列多项式相乘,结果为x²+2x-8的是A.(x+4)(x-2)B.(x-4)(x+4)C.(x-4)(x-2)D.(x+4)(x+2)
下列多项式相乘,结果为x²+2x-8的是A.(x+4)(x-2)B.(x-4)(x+4)C.(x-4)(x-2)D.(x+4)(x+2)
选A,
(x+4)(x-2)
=x²+4x-2x+4*(-2)
=x²+2x-8
多项式相乘,结果为x²+2x-8的是
A.(x+4)(x-2)
c
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