Opuść nawiasy i wykonaj redukcję wyrazów podobnych. a) -3ab(-6a²-2ab-b²)-(3ab³+6a²b²) b) 6a(5a²-8b)-10a(6b+7a²)-3ab c) [(8x³-4x²y²)-2(3x²y²+4x²)]×(-2x²y²) d) 4c-2(c-3)-3[c-3(4-2c)+8]

a)-3ab(-6a²-2ab-b²)-(3ab³+6a²b²) =18a³b+6a³b²+3ab³-3ab³-6a²b²=18a³b+6a³b²-6a²b² b) 6a(5a²-8b)-10a(6b+7a²)-3ab =30a³-48ab-60ab-70 a³-3ab=-40a³-111ab c) [(8x³-4x²y²)-2(3x²y²+4x²)]×(-2x²y²) =8x³-4x²y²-6x²y²-8 x²-2x³y²=8x³-10x²y²-8 x²-2x³y² d) 4c-2(c-3)-3[c-3(4-2c)+8] =4c-2c+6-3[c-12+6c+8]= 4c-2c+6-3c+36-18c-24=-19c+18