问题 解答题

(1)(a23-(a24÷(-a25

(2)(x34+(x26

(3)(-2a2b34+(-a)8-(2b43

(4)(0.125)2006-(-8)2007-(-1)2006

(5)(p-q)4÷(q-p)3-(p-q)2

(6)4-(-2)-2-32÷(3.14-π)0

答案

(1)(a23•(a24÷(-a25

=a6•a8÷(-a10

=a14÷(-a10

=-a4

(2)(x34+(x26

=x12+x12=2x12

(3)(-2a2b34+(-a)8•(2b43

=16a8b12+8a8b12=24a8b12

(4)(0.125)2006•(-8)2007•(-1)2006

=(

1
8
2006•(-8)2006•(-8)•1

=[

1
8
×(-8)]2006•(-8)

=(-1)2006•(-8)

=-8;

(5)(p-q)4÷(q-p)3•(p-q)2

=(p-q)4÷[-(p-q)3]•(p-q)2

=-(p-q)4-3+2

=-(p-q)3

=(q-p)2

(6)4-(-2)-2-32÷(3.14-π)0

=4-

1
4
-9÷1

=4-

1
4
-9

=-5

1
4

判断题
单项选择题 A1/A2型题