算式:3(a³-a²b+1/2ab²)-1/2(6a²+4a²b+3ab²)

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算式:3(a³-a²b+1/2ab²)-1/2(6a²+4a²b+3ab²)算式:3(a³-a²b+1/2ab²

算式:3(a³-a²b+1/2ab²)-1/2(6a²+4a²b+3ab²)
算式:3(a³-a²b+1/2ab²)-1/2(6a²+4a²b+3ab²)

算式:3(a³-a²b+1/2ab²)-1/2(6a²+4a²b+3ab²)
3(a³-a²b+1/2ab²)-1/2(6a²+4a²b+3ab²)
= 3a³-3a²b+3/2ab²-3a²-2a²b-3/2ab²
=-5a²b