Question

6 + root 2 whole square formula

Answer 1

(6+√2)^2=6^2+(√2)^2+2×6×√2
=36+2+12√2=38+12√2=2(19+6√2)
is your answers

Answer 2

$( {6 + \sqrt{2} })^{2} = {6}^{2} + { \sqrt{2} }^{2} + 2 \times \sqrt{2} \times 6 \\ = 36 + 2 + 12 \sqrt{2} \\ = 38 + (12 \times 1.414) \\ = 38 + 16.968 \\ = 54.968(ans)$