\(9876543.9876545-9876544^2\)

\(=\left(9876544-1\right)\left(9876544+1\right)-9876544^2\)

\(=\left(9876544^2-1\right)-9876544^2\)

\(=9876544^2-1-9876544^2\)

\(=-1\)

9876543 x 9876545 - 9876544²

= 9876543 x ( 9876544 + 1 ) - 9876544 x 9876544

= 9876543 x 9876544 + 9876543 - 9876544 x ( 9876543 + 1 )

= 9876543 x 9876544 + 9876543 - 9876544 x 9876543 - 9876544

= - 1

\(A=1234566\cdot1234568+1234568-1234566\cdot1234568-1234566\) 

\(=1234568-1234566\) 

\(=2\) 

\(B=9876542\cdot9876544+9876544-9876542\cdot9876544-9876542\) 

\(=9876544-9876542\) 

\(=2\) 

Vậy \(A=B\)

Đó là 11111110 đấy !

\(9876543.9876545-9876544^2\)

\(=9876543.9876545-9876544.9876544\)

\(=9876543.\left(9876544+1\right)-9876544.9876544\)

\(=9876543.9876544+9876544.9876544+9876544.1\)

\(=9876544.\left(9876543+1\right)+9876544.9876544\)

\(=\left(9876544+9876544\right)^2\)

\(=19753088^2\)

9 876 543 . 9 876 545 - ( 9 876 544 )²

= ( 9 876 544 - 1 )( 9 876 544 + 1 ) - ( 9 876 544 )².1

= [ ( 9 876 544 )² - 1² ] - ( 9 876 544 )²

= ( 9 876 544 )² - 1 - ( 9 876 544 )²

= -1

2 + 2³ + 9876543⁰ + 2² = 2 + 8 + 1 + 4 = 15

2+2^3+9876543^0+2^2=15

2+2³+9876543⁰+2²=2+8+1+4=15

bn cho mik rùi mik k lại choa nha!

234567 + 9876543 + 109238 = 1330348

k mk nha ^_^

234567+9876543+109238=1330348

k mk nha! mk k lại cho

1330348

-2 

ủng hộ nha

đề này làm sao có thể làm được giờ

987654321-98765432-9876543-.....-9= -2

A bé hơn B

123456 + 98765 - 123456 + 9876543 -12345698=-2370390

Tk nha

= -248180

=-248180 nha bạn

Chúc bạn học giỏi tk mình chứ