✨ Best Answer ✨
2(1/(1+t^2))-(1+t^2)/(1+t^2)=(2-(1+t^2))/(1+t^2)=(2-1-t^2)/(1+t^2)=(1-t^2)/(1+t^2) です。 1+t^2 で通分しましょう
✨ Best Answer ✨
2(1/(1+t^2))-(1+t^2)/(1+t^2)=(2-(1+t^2))/(1+t^2)=(2-1-t^2)/(1+t^2)=(1-t^2)/(1+t^2) です。 1+t^2 で通分しましょう
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