\(\frac{35\left(27^8+2.9\right)}{15\left(8^{16}-12.3^{19}\right)}\)
\(=\frac{7.\left(3^{24}+2.3^2\right)}{2^{48}-2^2.3^{20}}\)
\(=\frac{3^2.7.\left(3^{20}+2\right)}{2^2.\left(2^{46}-3^{20}\right)}\)
\(\frac{35\left(27^8+2.9\right)}{15\left(8^{16}-12.3^{19}\right)}\)
\(=\frac{7.\left(3^{24}+2.3^2\right)}{2^{48}-2^2.3^{20}}\)
\(=\frac{3^2.7.\left(3^{20}+2\right)}{2^2.\left(2^{46}-3^{20}\right)}\)
Rút gọn
35.(278+2.911)
(816-12.319).15
35.(27^8+2.9^11)
15.(81^6-12.3^19)
tính B = 35(278 +2.911) phần 15(816 -12.319 )
\(\frac{35.\left(27^8+2.9^{11}\right)}{15.-\left(81^6-12.3^{19}\right)}\)
\(\frac{35\left(27^8+2.9^{11}\right)}{15\left(81^6-12.3^{19}\right)}\)
E = \(\frac{35.\left(27^8+2.9^{11}\right)}{\left(81^6-12.3^{19}\right).15}\)
câu 3: rút gọn rồi quy đồng
a, 12/36 và -16/ 20 b, 21/ 105 và 35/ 150
Câu 4:
a, 3/10 + 5/10 b, [-27] . 36+ 64 . [-27] + 23 . [ -100]
c, 5/8 + 3/ 12 d, -2/17 + 3/19 + -15/ 17 + 16/19 + 5/6
Tính \(\frac{35.\left(27^8+2.9^{11}\right)}{15.\left(81^6-12.3^{19}\right)}\)
Câu 3: rút gọn phân số
a, 12/36 và -16/ 20 b, 21/ 105 và 35/ 150
Câu 4:
a, 3/10 + 5/10 b, [-27] . 36+ 64 . [-27] + 23 . [ -100]
c, 5/8 + 3/ 12 d, -2/17 + 3/19 + -15/ 17 + 16/19 + 5/6