(√2 - 1) * 3 - √2 (3 + √2) ayudaaaaaaaaaaa * Quiere decir elevado?

X + y) = (3 + 2√2) ^ 1 / 2

Squaring on both sides,

(x + y) ^ 2 = 3 + 2√2

Expanding left hand side,

x ^ 2 + 2xy + y ^ 2 = 3 + 2√2

Here, the term x ^ 2 and y ^ 2 are the squaring terms so it does not contain √2.

So we get

x ^ 2 + y ^ 2 = 3 and 2xy = 2√2

x ^ 2 + y ^ 2 = 3 and xy = √2

Here when x = 1 , y = √2 and vice versa.

So value of (x + y) = (3 + 2√2) ^ 1 / 2 = √2 + 1 = 2.

41429.