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a) Ta có: \(M=\frac{8^{10}+4^{10}}{8^4+4^{11}}\)
\(=\frac{4^{10}\left(2^{10}+1\right)}{4^4\cdot2^4+4^4\cdot2^7}=\frac{4^{10}\left(2^{10}+1\right)}{4^4\left(2^4+2^7\right)}\)
\(=\frac{2^{10}+1}{2^4+2^7}=\frac{1025}{144}\)
b) Ta có: \(\left(3^2\right)^2-\left(-2^3\right)^2-\left(-5^2\right)^2\)
\(=3^4-\left(-8\right)^2-\left(-25\right)^2\)
\(=3^4-64-625=81-64-625=-608\)
TÍNH
a) 32 . (2/3)4 . (-3/2)3
b) (50)3 . 104 . 1/(4/5)2 . (2/5)4
c) (1/4 - (4/3)4 . 1/22 ) : (1/10 +4)
S = 2^4.(1^4+2^4+3^4+.....+10^4)
= 16 . 25333
= 405328
Tk mk nha
1)\(\frac{4^6.45}{2^4}=\frac{\left(2^2\right)^6.45}{2^4}=\frac{2^{12}.45}{2^4}=2^8.45=256.45=11520\)
2)\(\frac{8^5.16^3}{4^{13}}=\frac{8^5.\left(4^2\right)^3}{4^{13}}=\frac{8^5.4^6}{4^{13}}=\frac{8^5}{4^7}=\frac{\left(8^2\right)^2.8}{\left(4^3\right)^2.4}=\frac{64^2.8}{64^2.4}=\frac{8}{4}=2\)
3)Cái này bạn tự làm vì dễ rồi
4)\(\frac{45^{10}.5^{20}}{75^{15}}=\frac{\left(3^2.5\right)^{10}.5^{20}}{\left(5^2.3\right)^{15}}=\frac{3^{20}.5^{10}.5^{20}}{5^{30}.3^{15}}=\frac{3^{20}.5^{30}}{5^{30}.3^{15}}=3^5=243\)
Chúc bạn học tốt
Trả lời:
1,\(\frac{4^6\times45}{2^4}=\frac{\left(2^2\right)^6\times45}{2^4}\)
\(=\frac{2^{12}\times45}{2^4}\)
\(=2^8\times45\)
\(=256\times45\)
\(=11520\)
2,\(\frac{8^5\times16^3}{4^{13}}=\frac{\left(2^3\right)^5\times\left(2^4\right)^3}{\left(2^2\right)^{13}}\)
\(=\frac{2^{15}\times2^{12}}{2^{26}}\)
\(=\frac{2^{27}}{2^{26}}\)
\(=2\)
3,\(\frac{2^{10}\times13+2^{10}\times65}{2^8\times104}=\frac{2^{10}\times\left(13+65\right)}{2^8\times104}\)
\(=\frac{2^{10}\times78}{2^8\times104}\)
\(=\frac{2^2\times3}{4}\)
\(=\frac{4\times3}{4}\)
\(=3\)
4,\(\frac{45^{10}\times5^{20}}{75^{15}}=\frac{\left(5\times9\right)^{10}\times5^{20}}{\left(3\times25\right)^{10}}\)
\(=\frac{\left(5\times3^2\right)^{10}\times5^{20}}{\left(3\times5^2\right)^{15}}\)
\(=\frac{5^{10}\times3^{20}\times5^{20}}{3^{15}\times5^{30}}\)
\(=\frac{5^{30}\times3^{20}}{3^{15}\times5^{30}}\)
\(=3^5=243\)
Học tốt
16
2^4=2x2x2x2=16 nhé