计算(4+m)(16-4m+m2)
问题描述:
计算(4+m)(16-4m+m2)
(4+m)(16-4m+m2)
(a+2)(a-2)(a4+4a2+16)
(1/5m-1/2n)(1/25m2+1/10mn+1/4n2)
(x2+2xy+y2)(x2-2xy+y2)2
答
1、m³+64;2、a^6-64;3、(1/125)m³-(1/8)n³;4、?注:这四个题目都是利用立方和差公式计算的,即:a³-b³=(a-b)(a²+ab+b²)a³+b³=(a+b)(a²-ab+b²)...要过程啊,大哥还有第4题啊4、=(x²+2xy+y²)(x²-2xy+y² =(x+y)²(x-y)² =(x²-y²)² =x^4-2x²y²+y^4