a²-5a=7.求(a-1)(2a-1)-(a+1)²-3的值.若实数a满足a²-2a+1=0.则2a²-4a+5=______0.2^2009×5^2010=______

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a²-5a=7.求(a-1)(2a-1)-(a+1)²-3的值.若实数a满足a²-2a+1=0.则2a²-4a+5=______0.2^2009×5^2010=______
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a²-5a=7.求(a-1)(2a-1)-(a+1)²-3的值.若实数a满足a²-2a+1=0.则2a²-4a+5=______0.2^2009×5^2010=______
a²-5a=7.求(a-1)(2a-1)-(a+1)²-3的值.
若实数a满足a²-2a+1=0.则2a²-4a+5=______
0.2^2009×5^2010=______

a²-5a=7.求(a-1)(2a-1)-(a+1)²-3的值.若实数a满足a²-2a+1=0.则2a²-4a+5=______0.2^2009×5^2010=______
若实数a满足a²-2a+1=0.则2a²-4a+5=3.
0.2^2009×5^2010=5