what is simplified form of
(2 + \sqrt{5} )(5 - \sqrt{3} )(2+
5
​
)(5−
3
​
)
3:what is difference between
5 \sqrt{200} - 6 \sqrt{18} 5
200
​
−6
18
​

4:simplify
\sqrt{20} - 2 \sqrt{180}
20
​
−2
180
​


5:which of the ff is true
A
10 \sqrt{ \frac{x}{5} } = 2 \sqrt{5} 10
5
x
​

​
=2
5
​

B
\sqrt{ \frac{121}{25} } = \frac{11}{5}
25
121
​

​
=
5
11
​

C
3 \sqrt{7} - 2 \sqrt{5} = \sqrt{2} 3
7
​
−2
5
​
=
2
​


D
2 \sqrt{10} - 2 \sqrt{5} = \sqrt{2} 2
10
​
−2
5
​
=
2
​


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