计算:2log5 10+log5 0.25=______

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计算:2log5 10+log5 0.25=______
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计算:2log5 10+log5 0.25=______
计算:2log5 10+log5 0.25=______

计算:2log5 10+log5 0.25=______
2log5 10+log5 0.25=log5 10^2+log5 0.25=log5 (100*0.25)
=log5 25=2

原式=log5 100+log5 0.25
=log5 25
=2

=2(1+log5 2)-2log5 2
=2

2log5 10+log5 0.25
=log5 10^2+log5 0.25
=log5 100+log5 0.25
=log5 100*0.25
=log5 25
=log5 5^2
=2log5 5
=2

2log5 10+log5 0.25=log5 100*0.25=log5 25=2