√5t²-2t+2怎么算?

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√5t²-2t+2怎么算?√5t²-2t+2怎么算?√5t²-2t+2怎么算?原式=t^2-(2根号5)t+(2根号5)

√5t²-2t+2怎么算?
√5t²-2t+2怎么算?

√5t²-2t+2怎么算?
原式=t^2-(2根号5)t+(2根号5)