Toán Lớp 8: 3 phần x²-5x và -5 phần 10-2x = ……
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Toán Lớp 8: 3 phần x²-5x và -5 phần 10-2x = ……
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\frac{3}{{{x^2} – 5x}};\frac{{ – 5}}{{10 – 2x}}\\
= \frac{3}{{x\left( {x – 5} \right)}};\frac{{ – 5}}{{2\left( {5 – x} \right)}}\\
= \frac{3}{{x\left( {x – 5} \right)}};\frac{{ – 5}}{{ – 2\left( {x – 5} \right)}}\\
= \frac{{ – 6}}{{ – 2x\left( {x – 5} \right)}};\frac{{ – 5x}}{{ – 2x\left( {x – 5} \right)}}\\
= \frac{6}{{2x\left( {x – 5} \right)}};\frac{{5x}}{{2x\left( {x – 5} \right)}}
\end{array}\]