Question

Solve this (3+root7)square

Answer 1

Answer:

Solution :-

$(3 + \sqrt{7} {)}^{2} = {3}^{2} + ( \sqrt{7} {)}^{2} + 2 \times \sqrt{7} \times 3 \\ \\ = 9 + 7 + 6 \sqrt{7} \\ \\ = 16 + 6 \sqrt{7}$