问题 解答题
计算(x5+2x4+
1
2
x3)÷(
1
2
x)2
答案

(x5+2x4+

1
2
x3)÷(
1
2
x)2

=(x5+2x4+x3)÷

1
4
x2

=x5÷

1
4
x2+2x4÷
1
4
x2+x3÷
1
4
x2

=4x3+8x2+2x.

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