Multiple Choice Question (MCQ)
The value of (\sqrt{5}+\sqrt{2} )(\sqrt{5}\sqrt{2} )

×
10

×
7

✓
3

×
\sqrt{3}
The value of (\sqrt{5}+\sqrt{2} )(\sqrt{5}\sqrt{2} )
10
7
3
\sqrt{3}
Apply difference of squares formula to the product of conjugates
(\sqrt{5}+\sqrt{2} )(\sqrt{5}\sqrt{2} )
=(\sqrt{5} )^2(\sqrt{2} )^2
=52
=3