5x2^6-6x2^4+1/4x2^7过程

题目

5x2^6-6x2^4+1/4x2^7过程

答案

5x2^6-6x2^4+1/4x2^7
＝2^4(5x2^2-6+1/4x2^3)
=16x(5x4-6+1/4x8)
=16x(20-6+2)
=16x16
=256