*TINH HOP LY
512.(2-128)-128.(-512)
Tinh mot cach hop li nhat :
a) 512.(2-128) - 128.(-512)
b) 2155-(174 + 2155) + ( -68 + 174)
a, =512 . -126 - 128 . -512
= -512 . 126 - 128 . -512
= -512.[126 - 128]
= -512.-2
=1024
b, =2155 - 174 - 2155 + 106
=2155-2155 - 174 +106
=0 - 174 +106
=-68
a) \(=512\cdot\left(2-128\right)+128\cdot512 \)
\(=512\cdot\left(2-128+128\right)\)
\(=512\cdot2=1024\)
2155 - (174 + 2155) + ( -68 + 174)
= ( 2155 - 2155 ) + ( 174 - 174 ) + ( -68 )
= 0 + 0 + ( -68 )
= -68
tinh
512.(2-128)-128.(-512)
tính hợp lí nhé!!!~♥
= (512.2-512.128)-128.(-512)
=512.2-512.128-128.(-512)
=[512.128+128x (-512)]+512.2
=0+1024
=1024
512 . ( 2 - 128 ) - 128 . ( - 512 )
=512. (2-128) +512.128
= 512. (2-128+128)
=512.2
=1024
Chúc bạn học tốt nha!
512.(2-128)-128.(-512)
512.(2-128)-128.(-512)
=512.(-128)-128.(-512)
=-65536-(-65536)
=-65536+65536
=0
tinh nhanh neu co the
512 x ( 2 - 128 ) - 128 x ( - 512 )
cac ban ghi loi giai chi tiet nhe
Neu thay dung minh se tick
512.(2 - 128) - 128.(-512) = 512.(2 - 128) - (-128).512 = 512.[2 - 128 - (-128)] = 512.2 = 1024
512 x ( 2 - 128 ) - 128 x ( - 512 )
= 512 x 2 - 512 x 128 - ( - 128) x 512
= 512 x (2 - 128 + 128 )
= 512 x 2
= 1024
=512.2-512.128+128.512
=512.(2-128+128)
=512.2
=1024
Giup mình với 512.(2-128)-128.(-512)
Khó thì mới hỏi chứ vô duyên thúi
512.(2-128)-128.(-512)
=512.2-512.(-128)-128.(-512)
=512.2-[512.(-128)-128.(-512)]
=512.2-0
=1024
không sao
tính nhanh 512×(2-128)-128×(-512)
512 x ( 2 - 128 ) - 128 x ( -512 )
= 512 x ( -126 ) - ( -128 ) x 512
= 512 x [ ( -126 ) - ( -128 ) ]
= 512 x 2
= 1024
512 × (2 - 128) - 128 × (-512)
= 512 × (-126) - (-128) × 512
= 512 × [(-126) - (-128)]
= 512 × 2
= 1024
tính nhanh:
512.[2-128]-128.[-512]
512.(2-128)-128.(-512)
= [512.(2-128)]-[128.(-512)
= - 64512 - (- 65536)
= - 64512 + 65536
= 1024
\(512.(2-128)-128.(-512)\)
\([512.(2-128)]-[128.(-512)]\)
\(-64512-(-65536)\)
\(-64512+65536\)
\(1024\)
512.[2-128]-128.[-512]
=512.[-126]-128.[-512]
=[-512].126-128.[-512]
=[-512].[126-128]
=[-512].[-2]
=11024
tính :
512 x ( 2 - 128 ) - 128 x ( - 512 )
=512 x 2 - 128 x 512 - (-512) x 128
=512x2-128x512+512x128
=512x2+0=1024
512 . ( 2 - 128 ) - 128 . ( - 512 ) = 512 . 2 - 512 . 128 +128 . ( - 512 ) =1024 - [ 512 . 128 + 128 .(-512) ] = 1024 - [128 . (512 - 512) ] = 1024- [ 128 . 0 ] =1024