计算:(2m+1/2)(4m-1)(4m∧2-1/4)-4m∧2(2m+1)(2m-1)
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计算:(2m+1/2)(4m-1)(4m∧2-1/4)-4m∧2(2m+1)(2m-1)
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(2m+1/2)(4m-1)(4m∧2-1/4)-4m∧2(2m+1)(2m-1)
=1/2 (4m+1)(4m-1)(4m∧2-1/4)-4m∧2(4m²-1)
=1/8 [(16m²-1)(16m²-1)]-16m^4+4m²
=32m^4-4m²+1/8-16m^4+4m²
=16m^4+1/8
=1/2 (4m+1)(4m-1)(4m∧2-1/4)-4m∧2(4m²-1)
=1/8 [(16m²-1)(16m²-1)]-16m^4+4m²
=32m^4-4m²+1/8-16m^4+4m²
=16m^4+1/8
已知m>4,化简|m-4|+|7-2m|+|m×m-2m+1|-|m×m-2m-3|
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