177 : [ 2 . ( 4 mũ 2 -9 ) + 3mũ 2 (15 -10)]
= 177 : [ 2 . (16 - 9) + 9 . 5 ]
= 177 : [ 2 . 7 + 9 .5 ]
= 177 : [ 14 + 45 ]
= 177 : 59
=3
177 : [ 2 . ( \(4^{2-9}\)) + \(3^2\) (15 -10)]
= 177 : [ 2 . (16 - 9) + 9 . 5 ]
= 177 : [ 2 . 7 + 9 .5 ]
= 177 : [ 14 + 45 ]
= 177 : 59
=3
P/s: Nhớ tick cho mình nha. Thanks bạn
Ta có: \(177:\left[2\cdot\left(4^2-9\right)+3^2\cdot\left(15-10\right)\right]\)
\(=177:\left[2\cdot7+9\cdot5\right]\)
\(=177:\left(14+45\right)\)
\(=177:59=3\)