2.1.4多项式的乘法(1)VIP专享VIP免费

怎样计算单项2x与多项式的积？235xx一般的，对于单项式与多项式相乘，利用乘法对加法的分配律进行运算．单项式与多项式相乘利用乘法对加法的分配律计算：21235xxx2212442ababab解21235xxx223225xxxxx326210xxx2212442ababab2214442abababab2332216abab以代入计算2222212442xxyxyxyxy的值，其中2222212442xxyxyxyxy解2222221124422xxyxxyxyxy32423224xyxyxy324232xyxy2,1xy2,1xy原式＝2234321221561.计算：2125xxy22314xxx2.求值：231123422xyxyxxyx，其中1,2xy231123422xyxyxxyxxxxyxxyxy21214213232232241232xyxxyxy23224122232xxyyxxyxyxyyxyxyx333322146原式=2121214216333321324879180解