题目内容
计算:
(1)(x+2)(4x-2);
(2)(-a)2•(a2)2÷a3;
(3)(-
)100×3101-(-2013)0.
(1)(x+2)(4x-2);
(2)(-a)2•(a2)2÷a3;
(3)(-
1 |
3 |
(1)(x+2)(4x-2)
=4x2-2x+8x-4
=4x2+6x-4.
(2)(-a)2•(a2)2÷a3
=a2•a4÷a3
=a3.
(3)(-
)100×3101-(-2013)0
=[(-
)×3]100×3-1
=3-1
=2.
=4x2-2x+8x-4
=4x2+6x-4.
(2)(-a)2•(a2)2÷a3
=a2•a4÷a3
=a3.
(3)(-
1 |
3 |
=[(-
1 |
3 |
=3-1
=2.
练习册系列答案
相关题目