3(4+1)(4^2+1)请利用平方差进行简便运算,
问题描述：
3(4+1)(4^2+1)
请利用平方差进行简便运算,
答
3(4+1)(4^2+1) =(4-1)(4+1)(4^2+1) =(4^2-1)(4^2+1) = 8^4-1 =1696-1 =1695
3(4+1)(4^2+1)
请利用平方差进行简便运算,
3(4+1)(4^2+1) =(4-1)(4+1)(4^2+1) =(4^2-1)(4^2+1) = 8^4-1 =1696-1 =1695