Question

Bài 1c, ( 500 x 9 - 250x 18 ) x ( 1 + 2 +.....+ 9 )

Answer 1

(500 x 9 - 250 x 18) x (1 + 2 + 3 + ... + 9)

= (250 x 2 x 9 - 250 x 18) x (1 + 2 + 3 + ... + 9)

= (250 x 18 - 250 x 18) x (1 + 2 + 3 + .. + 9)

= 0 x (1 + 2 + 3 +... +9)

= 0

Answer 2

= ( 500 × 9 - 250 × 2 ×9 ) × ( 1 + 9 ) × 9 : 2

= (500 × 9 - 500 ×9 ) × 45

= 0 × 45

0

Answer 3

( 500 x 9 - 250 x 18 ) x ( 1 + 2 + ... + 9 )

= ( 500 x 9 - 250 x 2 x 9 ) x ( 1 + 2 + ... + 9 )

= ( 500 x 9 - 500 x 9 ) x ( 1 + 2 + ... + 9 )

= 0 x ( 1 + 2 + ... + 9 )

= 0

Rất vui vì giúp đc bạn <3

Answer 4

 ( 500 x 9 - 250x 18 ) x ( 1 + 2 +.....+ 9 )

= (4500-4500) . (1+2+.....+9)

= 0.(1+2+.....+9)

= 0