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(23 . 95 + 94 . 45) : (93 . 10 - 93)
= 94.(23.9 + 45) : 93.(10 - 1)
= 94.117 : 94
= 117
(23.95 + 94.45) : (93.10 - 93)
= (23.95 + 95.5) : 94
= 95.13 : 94
= 9.13 = 117
\(\left(2^3\cdot9^4+9^3\cdot45\right):\left(9^2.10-9^2\right)=\)\(\left(8.6561+729.45\right):\left(81.10-81\right)\)
\(=\left(52488+32805\right):\left(810-81\right)\)
\(=\left(85293\right):\left(729\right)\)\(=117\)
\(\left(2^3\cdot9^4+9^3\cdot45\right):\left(9^2\cdot10-9^2\right)\)
\(=\left(8.9^4+9^3.9.5\right):\left(810-81\right)\)
\(=\left(8\cdot9^4+9^4.5\right):729\)
\(=6561\left(8+5\right):729\)
\(=85293:729=117\)
\(\left(2^3.9^4+9^3.45\right):\left(9^2.10-9^2\right)\)
\(=\left(2^3.9^4+9^3.\left(9.5\right)\right):\left[9^2.\left(10-1\right)\right]\)
\(=\left[2^3.9^4+9^4.5\right]:\left(9^2.9\right)\)
\(=9^4.\left(2^3+5\right):9^3\)
\(=\left(2^3+5\right).\left(9^4:9^3\right)\)
\(=\left(8+5\right).9\)
\(=13.9\)
\(=117\)
(23 . 94 + 93 . 45) : (92 . 10 - 92)
= (23 . 94 + 94 . 5): [92 . (10 - 1)]
= 94 (23 + 5) : [92 . (10 - 1)]
= 94 . 13 : 93
= 9 . 13
= 117.
Vậy.....
a, 1024 : (17.25 + 15.25) = 210 : [25.(17+15)] = 210 : (25. 25) = 210 : 210 =1
b, (5.35 + 17.34) : 62 = 34.(5.3 + 17) : (2.3)2 = 34.25 : (22.32) = 32.23=72
c, (23.94 + 93.45) : (92.10 - 92) = 94.(23 + 5) : [92.(10-1)] = 94.13 : 93 = 9.13 =117
Đúng thì nha
a) \(\left(2^3.9^4+9^3.45\right):\left(9^2.10-9^2\right)\)
=\(\left(2^3.9^4+9^3.9.5\right):9^2\left(10-1\right)\)
= \(\left(8-9^4+9^4.5\right):9^2.9\)
=\(9^4\left(8-5\right):9^3\)
=\(9^4.3:9^3\)
=\(9^4:9^3.3\)
=\(9.3\)
=\(27\)
\(\left(2^3.9^4+5^3.45\right):\left(9^2.10-9^2\right)\)
\(=\left(2^3.9^4+9^3.9.5\right):\left(9^2.9\right)\)
\(=\left[9^4.\left(2^3+5\right)\right]:9^3\)
\(=9^4.13:9^3\)
\(=9.13\)
\(=117\)