(16x²y³z-8x³y²z)÷(-8x²y²)=
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(16x²y³z-8x³y²z)÷(-8x²y²)=
(16x²y³z-8x³y²z)÷(-8x²y²)=
(16x²y³z-8x³y²z)÷(-8x²y²)=
(16x²y³z-8x³y²z)÷(-8x²y²)
=[-8x²y²(xz-2yz)]÷(-8x²y²)
=xz-2yz
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(16x²y³z-8x³y²z)÷(-8x²y²)
=-2yz+xz
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原式=16 x² y³ z ÷(- 8 x² y² )- 8 x³ y² z ÷(- 8 x² y² )
= - 2 y z - x z