问题
解答题
计算(x5+2x4+
|
答案
(x5+2x4+
x3)÷(1 2
x)2,1 2
=(x5+2x4+x3)÷
x2,1 4
=x5÷
x2+2x4÷1 4
x2+x3÷1 4
x2,1 4
=4x3+8x2+2x.
计算(x5+2x4+
|
(x5+2x4+
x3)÷(1 2
x)2,1 2
=(x5+2x4+x3)÷
x2,1 4
=x5÷
x2+2x4÷1 4
x2+x3÷1 4
x2,1 4
=4x3+8x2+2x.