Question

thực hiện phép tính

a) -27.73+27.(-27)

b) (9-13)²+|-14|.(-3)

c) 12345¹²³⁴⁵-(321+12345¹²³⁴⁵)

Answer 1

a. -27 . 73 + 27 . (-27)

= -27 . (73 + 27)

= -27 . 100

= -2700

b. (9 - 13)² + |-14| . (-3)

= (-4)² + 14 . (-3)

= 16 + (-42)

= -26

c. \(12345^{12345}- \left(321+12345^{12345}\right)=12345^{12345}-321-12345^{12345}=-321\)

Answer 2

a/ (-27)*(73+27)=-27*100=-2700

Answer 3

b/ 16+14*(-3)=16+(-42)=-26

Answer 4

a)  -27.73+27.(-27)

     =  [(-27).(-27)].(73+27)

     =  729.100

     = 72900

Answer 5

a/ = -2700

b/ = -26

c/ = 321

olm duyệt đi

Answer 6

Phá ngoặc

c/ 12345¹²³⁴⁵-321-12345¹²³⁴⁵=0-321=-321

tik nhá

Answer 7

a,

=-27.(73+27)

=-27.100

=-2700