(a-4b2)(a2+2ab+4b2)(a2-2ab+4b2)怎么用乘法公式算啊??

如题所述

=(a3+2a2b+4ab2-4a2b2-8ab3-16b4)(a2-2ab+4b2)
=(a5-2a4b+4a3b2)+(2a4b-4a3b2+8a2b3)+(4a3b2-8a2b3+16ab4)-4a4b2+8a3b3-16a2b4-8a3b3+16a2b4-32ab5-16a2b4+32ab5-64b6
=a5+4a3b2+16ab4-4a4b2-16a2b4-64b6追问

谢谢

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