= 28 + 62 x a x ( a x 1 - a : 1 ) + 28 x 8 + 28
= 28 + 62 x a x ( a - a ) + 28 x 8 + 28
= 28 + 62 xa x 0 + 28 x 8 + 28
= 28 + 0 + 28 x 8 + 28
= 28 x 2 + 28 x 8
= 28 x ( 2 + 8 )
= 28 x 10
= 280
28+62 x a x (a x1- a:1)+28 x 8 + 28
=28+62 x a x (a-a)+28 x 8 +28
=28+62 x a x 0 + 28 x 8 + 28
=28+ 0 +28 x 8 + 28
= 28 x (1+8+1)
=28 x 10
=280
nếu thấy đúng thì tk cho mk nha.
28 + 62 x a x ( a x 1 - a : 1 ) + 28 x 8 + 28
28+62 x a x ( a - a ) + 28 x 8 + 28 x 1
=28 x1 + 62 x a x 0 + 28 x 8 + 28 x1
=28x 1 + 0 + 28 x 8 + 28 x1
=28x ( 1 + 8 + 1 )
= 28 x 10 = 280
Trần Thị Châu Anh, thế Toán lớp mấy hả bạn =)))
Giúp tui (5+5)+-5+5:5×5×6-5+5:5×5×5×5-5+5+√45
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