a,(10^2+11^2+12^2):(13^2+14^2)

=(100+121+144);(169+196)

=365:365

=1

b,1.2.3...9-1.2.3...8-1.2.3...8^2=0

a)=(100+121+144):(169+196)=365:365=1

b)=1.2.3...8.(9-1-8)=1.2.3...8.0=0

k mk nhaa

a) =\(\left[\left(12+1\right)^2+\left(12+2\right)^2\right]:\left(13^2+14^2\right)\)

   =1

b)=(1.2.3....8).(9-1-8)

   =(1.2.3....8).0

   =0

mik chỉ giải được zậy thôi.

t mik nha.

( 100 + 121 + 144 ) : ( 169 + 196 )

= 365 : 365 = 1

\(\left(10^2+11^2+12^2\right):\left(13^2+14^2\right)\)

\(=\left(100+121+144\right):\left(169+196\right)\)

\(=\left(221+144\right):365\)

\(=365:365\)

\(=1\)Vậy kết quả = 1

\(\dfrac{10^2+11^2+12^2}{13^2+14^2}=\dfrac{100+121+144}{169+196}\)

\(=\dfrac{365}{365}=1\)

(10*2+11*2+12*2):(13*2+14*2)=100+121+144):(169+196)=1

D=(102+112+122):(132+142)

D =(100+121+144) / (169+196)

D =365 / 365

D = 1

Đề là \(D=\left(10^2+11^2+12^2\right):\left(13^2+14^2\right)\) cậu thêm mũ vào nhé.

=365 : 365

=1

(10² +11²+12²):(13² +14²)

=(100+121+144):(169+196)

=365:365

=1

`#3107.101107`

`-3^2 + {-54 \div [-2^8 + 7] * (-2)^2}`

`= -9 + [-54 \div (-256 + 7) * 4]`

`= -9 + [-54 \div (-249) * 4]`

`= -9 + (18/83 * 4)`

`= -9 + 72/83`

`= -675/83`

______

`31 * (-18) + 31 * (-81) - 31`

`= 31 * (-18 - 81 - 1)`

`= 31 * (-100)`

`= -3100`

___

`(-12) * 47 + (-12) * 52 + (-12)`

`= (-12) * (47 + 52 + 1)`

`= (-12) * 100`

`= -1200`

___

`13 * (23 + 22) - 3 * (17 + 28)`

`= 13 * 45 - 3 * 45`

`= 45 * (13 - 3)`

`= 45 * 10`

`= 450`

____

`-48 + 48 * (-78) + 48 * (-21)`

`= 48 * (-1 - 78 - 21)`

`= 48 * (-100)`

`= -4800`