(1)计算:(13)-1-|-2|+(2-π)0+2cos45°(2)已知a=1

题型:解答题

问题:

(1)计算:(
1
3
)-1-|-
2
|+(2-π)0+2cos45°

(2)已知a=
1
1+
2
,b=
1
1-
2
,求a2b+ab2代数式的值.
考点:零指数幂(负指数幂和指数为1)最简二次根式实数的运算特殊角三角函数值
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