3.(-7 ) ² + ( – 6 ) .7 – | – 125 | : (- 25 ) nhanh nha cần gấp 22/09/2021 Bởi Sarah 3.(-7 ) ² + ( – 6 ) .7 – | – 125 | : (- 25 ) nhanh nha cần gấp
Đáp án: $3.(-7 )^2 + ( – 6 ) .7 – | – 125 | : (- 25 )$ $= 3 . 49 + (-6) . 7 – 125 : (-25)$ $= 3 . 7 . 7 + (-2) . 3 . 7 – 125 : (-25)$ $= 21 . 7 + 21 . (-2) + 5$ $= 21(7 – 2) + 5$ $= 21 . 5 + 5$ $= 5 (21 + 1)$ $= 5 . 22$ $= 110$ Bình luận
3.(-7 ) ² + ( – 6 ) .7 – | – 125 | : (- 25 ) = 3 . 49 + -42 – 125 : ( – 25 ) = 147 + -42 – ( – 5 ) = 105 – ( – 5 ) = 110 <no coppy> Xin ctrlhn @changg Bình luận
Đáp án:
$3.(-7 )^2 + ( – 6 ) .7 – | – 125 | : (- 25 )$
$= 3 . 49 + (-6) . 7 – 125 : (-25)$
$= 3 . 7 . 7 + (-2) . 3 . 7 – 125 : (-25)$
$= 21 . 7 + 21 . (-2) + 5$
$= 21(7 – 2) + 5$
$= 21 . 5 + 5$
$= 5 (21 + 1)$
$= 5 . 22$
$= 110$
3.(-7 ) ² + ( – 6 ) .7 – | – 125 | : (- 25 )
= 3 . 49 + -42 – 125 : ( – 25 )
= 147 + -42 – ( – 5 )
= 105 – ( – 5 )
= 110
<no coppy>
Xin ctrlhn
@changg