2t+3t^3-(3t^2+5t-t^2)
=2t+3t^3-5t-2t^2
=3t^3-2t^2-3t
=t(3t^2-2t-3)用I,t的代數(shù)式表示園子的面積 當(dāng)l=100米,t=30米時(shí),求園子的面積題目不清,給你面積,還要求面積?
2t+3t3次方一(3t2次方+5t一t2次方)
2t+3t3次方一(3t2次方+5t一t2次方)
數(shù)學(xué)人氣:639 ℃時(shí)間:2019-11-12 01:28:42
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