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\(\frac{3.8\left(-14\right)}{42.35}\)
\(=\frac{3.2.4.\left(-1\right).7.2}{2.3.7.5.7}\)
\(=-\frac{8}{35}\)
\(\frac{\left(-5\right)^3.40.4^3}{125.\left(-2\right)^{14}.\left(-1000\right)^0}\)
\(=\frac{\left(-125\right).40.64}{125.16384.1}\)
\(=\frac{\left(-1\right).5}{1.32.1}=-\frac{5}{32}\)
\(\frac{\left(-5\right)^3.40.4^3}{125.\left(-2\right)^{14}.\left(-1000\right)^0}\)
\(=\frac{\left(-5\right)^3.2^3.5.\left(2^2\right)^3}{5^3.2^{14}.1}\)
\(=\frac{\left(-5\right)^3.2^3.5.2^6}{5^3.2^{14}}\)
\(=\frac{\left(-5\right)^3.2^9.5}{5^3.2^{14}}\)
\(=\frac{-5}{2^5}\)
\(=\frac{-5}{32}\)
a) \(\frac{2^3.3^4}{2^2.3^2.5}=\frac{2.3^2}{5}\)
b) \(\frac{2^4.5^2.11^2.7}{2^3.5^3.7^2.11}=\frac{2.11}{5.7}\)
c) \(\frac{121.75.130.69}{39.60.11.198}=\frac{11^2.3.5^2.2.5.13.23.3}{13.3.2^3.3.5.11.11.3^2.2}\)
\(=\frac{11^2.3^2.5^3.2.13.23}{13.3^4.2^4.5.11^2}=\frac{5^2.23}{3^2.2^3}\)
a,\(\frac{2^3.3^4}{2^2.3^2.5}=\frac{2^2.2.3^2.3^2}{2^2.3^2.5}\)\(=\frac{2.3^2}{5}\)
b,\(\frac{2^4.5^2.11^2.7}{2^3.5^3.7^2.11}=\frac{2^3.2.5^2.11.11.7}{2^3.5^2.5.7.7.11}=\frac{2.11}{5.7}\)
a) \(\frac{15.2-15.4}{15}=\frac{15.\left(2-4\right)}{15}=\frac{15.\left(-2\right)}{15}=\frac{-2}{1}=-2\)
b) \(\frac{3.7.\left(-14\right)}{42.35}=\frac{3.7.7.2.\left(-1\right)}{2.3.7.5.7}=\frac{-1}{5}\)
c) \(\frac{63.5-63.3}{2.\left(-3\right)^3-\left(-3\right)^2}=\frac{63.\left(5-3\right)}{2.\left(-3\right).\left(-3\right)^2-\left(-3\right)^2}=\frac{63.2}{\left(-6\right).\left(-3^2\right)-\left(-3\right)^2.1}=\frac{63.2}{\left(-6-1\right).\left(-3\right)^2}=\frac{63.2}{\left(-7\right).9}=\frac{63.2}{-63}=-2\)
dài dòng quá chả hiểu tí gj cả??????????????????????????????????????