7.2ˣ = 2⁹ + 5.2⁸
7.2ˣ = 2⁸.(2 + 5)
7.2ˣ = 2⁸.7
2ˣ = 2⁸.7 : 7
2ˣ = 2⁸
x = 8
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7.2ˣ = 2⁹ + 5.2⁸
7.2ˣ = 2⁸.(2 + 5)
7.2ˣ = 2⁸.7
2ˣ = 2⁸.7 : 7
2ˣ = 2⁸
x = 8
* Tính
a) (1/64)^4=(-1/8)^14
b) 7.2x=29+5.28
Tính
\(\frac{2^6.2^8+2^7.2^9}{2^5.2^7+2^5.2^7}-\frac{2^0+2.3^3}{3^0+8^2}\)
\(\dfrac{5.4^{15}-9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)
Tính:
A = \(\dfrac{5.4^{15}.9^9-4.3^{20}.8^9}{5.2^{10}.6^{19}-7.2^{29}.27^6}\)
\(\frac{5.4^{15}-9^9-4.3^{20}.8^9}{5.2^9-7.2^{29}.27^6}\)
\(\dfrac{5.4^{15}-9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)
_Gấp ạ!!!!_
Cảm mơn trước :33
\(\frac{5.4^{15}-9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)
5.4 mũ 15 - 9 mũ 9 - 4.3 mũ 20. 8 mũ 9 phần 5.2 mũ 9.6 mũ 19-7.2 mũ 29.27 mũ 6
\(B=\frac{5.4^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)