Question

(√2+a)^2 cu ajutorul formulei (a+b)^2=a^2+2ab+b^2 va rog urgent

Answer 1

(√2)²+2·√2·a+a²=2+2√2·a+a²

Answer 2

$(\sqrt2+a)^2 = (a+\sqrt2)^2= a^2+2a\sqrt2 +(\sqrt2)^2 =a^2+2a\sqrt2 +2$