Question

[Nguyễn Thuý Hiền]

1,Thực ép tính:

a) 4⁶x3⁴x9⁵

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6¹²

b) 2¹²x14x125

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3536

c) 45³x20⁴x18²

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180⁵

Answer 1

[Mafia]

a) \(\frac{4^6.3^4.9^5}{6^{12}}=\frac{2^{12}.3^4.3^{10}}{2^{12}.3^{12}}=\frac{3^{14}}{3^{12}}=3^2=9\)

c) \(\frac{45^3.20^4.18^2}{180^5}=\frac{5.9^3.2^2.5^4.2^2.9^2}{2^{10}.5^5.9^5}=\frac{5.3^6.2^2.5^4.2^2.3^4}{2^{10}.5^5.3^{10}}=\frac{5^9.3^{10}.2^4}{2^{10}.5^5.3^{10}}=\frac{5^4}{2^6}\)