Question

Rút gọn:

1. \(\frac{1}{5}\)x²y⁷. (-10x³yz²).(\(\frac{1}{4}\)x⁵y²z)

2. -3x⁴yz. (\(-\frac{1}{6}\)x³yz²).(\(-\frac{5}{2}\)x⁴y³z)

3. \(-\frac{1}{4}\)x³y⁴z⁵. (\(\frac{8}{9}\)x²yz).(\(-\frac{3}{5}\)xyz³)

4. \(\frac{5}{3}\)x⁴y³z⁵. (\(-\frac{3}{10}\)xy²z).(\(-\frac{2}{7}\)x⁵yz)

5. \(-\frac{1}{2}\)x⁴y⁷. (\(-\frac{2}{5}\)xyz).(\(\frac{10}{7}\)xz³).(-14y²z³)

Answer 1

a,-200 x¹⁰ t¹⁰z³

b,\(\frac{-5}{4}\)x¹¹ y⁵ z⁴

c,\(\frac{2}{15}\)x⁶ y⁶ z⁹

d,\(\frac{1}{7}\)x¹⁰ y⁶ z⁷

e,-4z⁶ y¹⁰ z⁶