Question

7 + 2 under root 10 whole ka square root

Answer 1

$\sqrt{7 + 2 \sqrt{10} } = \sqrt{ { \sqrt{5} }^{2} + { \sqrt{2} }^{2} + 2 \sqrt{2} \sqrt{5} } = \sqrt{5} + \sqrt{2}$
The answer is obtained by using the identity

${(x + y) }^{2} = {x}^{2} + {y}^{2} + 2xy$

Answer 2

hope it help you. . . . . .