化简求直(4+m)(4-m)+m(m-8)-12,其中m等于2分之1
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化简求直(4+m)(4-m)+m(m-8)-12,其中m等于2分之1
化简求直(4+m)(4-m)+m(m-8)-12,其中m等于2分之1
化简求直(4+m)(4-m)+m(m-8)-12,其中m等于2分之1
(4+m)(4-m)+m(m-8)-12
= 16 - m ^2 +m^2 -8m -12
=4 - 8m
=4 - 8 x1/2
=0
{[(1.5m+1.8m)×2+(4.5m×2m)]×(3.6m-0.15m)-0.8m×2m-1.5m×0.5m-1.0m×0.5m}×4间×3层+[(4.827m×2+2.4m×2m)×(3.6m-0.15m)-1.0m×2.1m×2面-1.0m×2.1m-1.2m×0.6m-1.2m×1.8m]×2层 +(6.387m+4.435m+6m+2.247m+2.247m×2+1.2m×2+3m×2)×(3.6m-0.15m)-1.2
化简求直(4+m)(4-m)+m(m-8)-12,其中m等于2分之1
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