25 . 17 . 4 = 425 . 4 = 1700
35 . 81 + 35 . 19 = 35.(81+19) =35 . 100 =3500
180-[110-(14-5)\(^2\)] =180-[110-9\(^2\)] =180-[110-81] =180-29=151
Chúc bạn học tốt !
25 × 17 ×4 =25 × 4 × 17 =100 ×17 = 1700
35 ×81 +35 ×19 = 35 × ( 81 + 19 ) = 35 × 100 = 3500
180 -[ 110 - ( 14 -5 )2 ]
180 -(110 - 92)
180 -( 110 -81 )
180 - 29
151
25 . 17 . 4
= (25 . 4) . 17
= 100 . 17
= 1700
35 . 81 + 35 . 19
= 35 . (81 + 19)
= 35 . 100
= 3500
180 - [110 - (14 - 5)²]
= 180 - [110 - 9²]
= 180 - [110 - 81]
= 180 - 29
= 151