作业帮(-0.25)x(-2)x(-5/12)x(+0.8)
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 14:02:35
(-0.25)x(-2)x(-5/12)x(+0.8)
(-0.25)x(-2)x(-5/12)x(+0.8)
(-0.25)x(-2)x(-5/12)x(+0.8)
(-0.25)×(-2)×(-5/12)×(+0.8)
=(-1/4)×(-2)×(-5/12)×4/5
=-(1/4×2×5/12×4/5)
=-(1/4×4/5)×(2×5/12)
=-1/5×5/6
=-1/6
(-0.25)x(-2)x(-5/12)x(+0.8)
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求1/2x^2-1/4x+0.2x^3+0.25x-0.5x^2-1/5x^3+0.5x-1 其中x=12/13
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