Question

a) . -2 - 13+ ( -14 ) - 19

b)221+4[(-5).8-4]

c) (-2)^3.(-2)^2+32

d) -15 . 12 - 8 . ( -12 )

Answer 1

a) . -2 - 13+ ( -14 ) - 19

= (-15) + (-14) -19 

= -29 -19 = -48.

b)221+4[(-5).8-4]

= 221 + 4. [ -40 - 4 ]

= 221 + 4 . -44

= 221 + -176 = 45

c) (-2)^3.(-2)^2+32

= -8 . 4 + 32

= -32 + 32 = 0

d) -15 . 12 - 8 . ( -12 )

= (-15.12) . (-8.-12)

= -180 . 96 = -17280

Hok tốt !

Answer 2

a) -2 - 13+ ( -14 ) - 19

= -15 + (-14) - 19

= -29-19

=-48

b) 221+4[(-5).8-4]

=221+4[-40-4]

=221+4.(-44)

=221+(-176)

=45

c) (-2)³.(-2)²+32

= (-8).4+32

= -32+32

= 0

d) -15 . 12 - 8 . ( -12 )

= -15 . 12 - ( -8 ) . 12

= 12 . [ -15 - (-8)]

= 12 . ( -7 )

= -84