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NQ
Nguyễn Quốc Đạt
CTVVIP
28 tháng 6
$\textbf{a)}$
$\{[261-(36-3)\cdot3^2]-9\}\cdot1001$
$=\{261-33\cdot9-9\}\cdot1001$
$=(261-297-9)\cdot1001$
$=-45\cdot1001$
$=-45045.$
NQ
Nguyễn Quốc Đạt
CTVVIP
28 tháng 6
$\textbf{b)}$
$\{315-[(660-41)^2-361]\cdot4217\}+2885$
$=\{315-(619^2-19^2)\cdot4217\}+2885$
$=\{315-(619-19)(619+19)\cdot4217\}+2885$
$=\{315-600\cdot638\cdot4217\}+2885$
$=3200-1613691600$
$=-1613688400.$
14 tháng 10 2018
Bo may la binh day k di hieu ashdbfgbgygygggydfsghuyfhdguuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu3
11 tháng 8 2016
a)152*32*53
=152*32*52*5
=152*(3*5)2*5
=152*152*5
=154*5
b)93*32*63*22
=(9*6)3*(3*2)2
=543*62
=(6*9)3*62
=63*93*62
=65*93
c)82*23
=82*8
=83
d)103*23*52
=(2*5)3*23*52
=23*53*23*52
=26*55
x2 = 361
=> x2 = 192
=> x = 19
Tick mik nhé !!!