Question

Спростіть вираз (√2-1)^2+2√2

Answer 1

$(\sqrt{2} -1)^{2} +2\sqrt{2} = \sqrt{2}^{2} -2\sqrt{2} +1^{2} +2\sqrt{2} = 2 + 1 = 3$

Answer 2

$( \sqrt{2} - 1)^{2} + 2 \sqrt{2} = 2 - 2 \sqrt{2} + 1 + 2 \sqrt{2} = 3$