[(6-11^1/2)^1/2+(6+11^1/2)^1/2]^2

[(6-11^1/2)^1/2+(6+11^1/2)^1/2]^2= [(6-√11)^1/2+(6+√11)^1/2]^2= [√(6-√11)+√(6+√11)]^2= 6-√11+2√(36-11)+6+√11= 2√25+12= 2*5+12= 10+12=22  

[(6 - √11)^½ +( 6 + √11)^½ ]² = = [(6 - √11)^½}² + 2*[(6 -√11)^½]*[(6 + √11)^½] + [(6 + √11)^½]² = = (6 - √11) + 2*[(6 - √11)*(6 + √11)]^½ + (6 + √11) = = 12 + 2* [6² - √11²]^½ = 12 +2*[36 - 11]^½ = 12 +2√25 = = 12 +2*5 = 12 + 10 = 22 =======================