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(2009•辽宁)计算:-(π+1)+4sin45°+()-1.
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(2009•辽宁)计算:
-(π+1)+4sin45°+(
)
-1.
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(2009•辽宁)计算:-(π+1)+4sin45°+()-1.
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(2009•辽宁)计算:-(π+1)+4sin45°+()-1.
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(2009•辽宁)计算:-(π+1)+4sin45°+()-1.
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(2009•成都)解答下列各题:
(1)计算:+2(π-2009)-4sin45°+(-1)3;
(2)先化简,再求值:x2(3-x)+x(x2-2x)+1,其中x=.
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(2009•成都)解答下列各题:
(1)计算:+2(π-2009)-4sin45°+(-1)3;
(2)先化简,再求值:x2(3-x)+x(x2-2x)+1,其中x=.