先化简在求值﹙m+3﹚²﹙m-3﹚²其中m=-1
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先化简在求值﹙m+3﹚²﹙m-3﹚²其中m=-1
先化简在求值﹙m+3﹚²﹙m-3﹚²其中m=-1
先化简在求值﹙m+3﹚²﹙m-3﹚²其中m=-1
﹙m+3﹚²﹙m-3﹚²
=[(m+3)(m-3)]²
=(m²-9)²
=m的4次方-18m²+81
=(-1)的4次方-18×(-1)²+81
=1-18+81
=64