Question

Answer 1

`a)\sqrt{(1/9+1/16).36}`

`=\sqrt{(16/144+9/144).36}`

`=\sqrt{25/144 .36}`

`=5/12 . 6`

`=5/2`

`b)\sqrt{0,01}-\sqrt{0,25}`

`=0,1-0,5`

`=-0,4`

`c)\sqrt{1,44}.\sqrt{0,5625}, 1 2/3`

`=1,2 . 3/4 . 5/3`

`=0,3.5`

`=1,5`

`d)\sqrt{1,96} 2/3 -\sqrt{1,21} 2/3`

`=1,4 . 2/3 -1,1 . 2/3`

`=(1,4-1,1). 2/3`

`=0,3 . 2/3`

`=0,2`

Answer 2

`a)\sqrt{(1/9+1/16).36}=\sqrt{25/144 .36}=\sqrt{25/4}=5/2`

`b)\sqrt{0,01}-\sqrt{0,25}=0,1-0,5=-0,4`

`c)\sqrt{1,44}.\sqrt{0,5625}. 1 2/3=1,2.0,75. 5/3=1,5`

`d)\sqrt{1,96}. 2/3-\sqrt{1,21}. 2/3=2/3.(\sqrt{1,96}-\sqrt{1,21})=2/3 .(1,4-1,1)=2/3 .0,3`

            `=0,2`