(-2m-3n-p)(2m-3n-p)
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(-2m-3n-p)(2m-3n-p)(-2m-3n-p)(2m-3n-p)(-2m-3n-p)(2m-3n-p)原式=-[2m+(3n+p)]·[2m-(3n+p)]=-4m²+(3n+p
(-2m-3n-p)(2m-3n-p)
(-2m-3n-p)(2m-3n-p)
(-2m-3n-p)(2m-3n-p)
原式=-[2m+(3n+p)]·[2m-(3n+p)]
=-4m²+(3n+p)²
=9n²+p²+6np-4m²
化简?
(-2m-3n-p)(2m-3n-p)
(m-2n+3p)(m+3n+3p)
(m-2n-p)(m-2n+p)-(m+2n+p)(m+2n+p)
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