15.85+\(85^2\)
=15.85+85.85
=(15+85).85
=850
Đ/S:850
a) tìm số nguyên x, y biet ( x- 1) (y+1)=-5
b) tim các số nguyên a, b, c biết ab=-35, bc=7,abc=35
Tinh hop ly
a) ( 36-6).(-5)+31.(-7-13)
b) -39.(85-48)-85.(39-48)
c) 48.(-21)+(-142).(-24)
d) 59.(35-15)-59.(35+15)
Tinh hop ly
85.(35-27)-35.(85-27)
77-11.(30+7)
15+15x2+15x7-100 Tinh hop ly
tinh hop ly
47.(45-15)-47.(45+15)
tinh hop li: 77-11(30+7)
85(35-27)-35(85-27)
47(45-15)-47(15+45)
thuc hien phep tinh sau mot cach hop ly:
45-|-15|:3
tinh hop ly neu co the
1.12.22-6.20+3.32
2.(212.213-15:5+2018).(53.1414-14.5353)
tinh hop ly :
a, -79 . |-45| -21 |+45|
b , 29 . (23 + 15) - 23 . (29 + 15)
AI NHANH VA DUNG THI MK SE TICK CHO ^_^
tinh hop ly neu co the
a) 200 - 15 . 12 + 196 : 14
b) 4,6 . 63 + 25 . 0,53 + 4,6 . 37 + 0,27 . 25
