Đáp án:
`a,` `1 1/3+2 2/5-0,4-[11/3:(5/6 . 66/10)]`
`=4/3+12/5-2/5-[11/3:(5/6 . 66/10)]`
`=56/15-2/5-[11/3:11/2]`
`=10/3-2/3`
`=8/3`
`b,` `sqrt(144)-5sqrt(16/9)+|-5 1/3|`
`=12-5. 4/3+5 1/3`
`=12-20/3+5 1/3`
`=12-4/3`
`=32/3`
`c,` `2/3sqrt121-3sqrt(25/9)+(-025)^0`
`=2/3 .11-3. 5/3+1`
`=22/3-5+1`
`=22/3-4`
`=10/3`
`d,` `(12^4 .(-10)^2)/(3^4 .4^5 .5^2)`
`=(3^4 .4^4 .2^2 .5^2)/(3^4 .4^5 .5^2)`
`=(3^4 .4^4 .4 .5^2)/(3^4 .4^5 .5^2)`
`=(3^4. 4^5 .5^2)/(3^4. 4^5 .5^2)`
`=1`
