Question

Tính hợp lí :

\(2^2.74.5^2+5^2.26.4-1000\)

Answer 1

2^2 .74 . 5^2 + 5^2 . 26 . 4 -1000

= 2 .74 .25 + 25 . 26 .4 -1000

= 7400 + 2600 -1000

=9000

Answer 2

\(2^2.74.5^2+5^2.26.4-1000=\)\(2^2.74.5^2+5^2.26.2^2-1000=\)\(2^2.5^2\left(74+26\right)-1000\)

\(=100.100-1000\)=\(10000-1000=9000\)

Answer 3

2^{2 .} 74 . 5²  + 5² . 26 . 4 - 1000

= 7400 + 2600 - 1000

= 7400 + 1600

= 9000