Question

1/ - Tính : (-2)².5².(-27) = 

2/ - Tìm x biết 23 - -x = 24 . Trả lời : x = 

Answer 1

1/

(-2)² . 5² . (-27)

= 4 . 25 . (-27)

= 100 . (-27)

= -2700

2/

23 - (-x) = 24.

23 + x = 24

x = 24 - 23

x = 1.

Answer 2

1/(-2)².5².(-27)

=[(-2).5]²*(-27)

=[-10]²*(-27)

=100*(-27)

=-2700

2/23 - -x = 24

23+x=24

x=1

Answer 3

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