(2√2-3√3)(3√3+2√2) = (2√2 3√3) + (2√2 2√2) - (3√3 3√3) - (3√3 * 2√2= 6√6 + 4√4 - 9 - 6√= 4 - = -5
(6 - √2)^2 + 3√3^2 = (6 - √2)(6 - √2) + 3(3= 36 - 6√2 - 6√2 + 2 + = 47 - 12√2
((√2 - √18)^2) - 30(5√7 - 13)(5√7 + 13) = (2 - 3√2)^2 - 30(25√49 - 169= 4 - 12√2 + 18 + 7500 - 507= 7522 - 12√2
(2√2-3√3)(3√3+2√2) = (2√2 3√3) + (2√2 2√2) - (3√3 3√3) - (3√3 * 2√2
= 6√6 + 4√4 - 9 - 6√
= 4 -
= -5
(6 - √2)^2 + 3√3^2 = (6 - √2)(6 - √2) + 3(3
= 36 - 6√2 - 6√2 + 2 +
= 47 - 12√2
((√2 - √18)^2) - 30(5√7 - 13)(5√7 + 13) = (2 - 3√2)^2 - 30(25√49 - 169
= 4 - 12√2 + 18 + 7500 - 507
= 7522 - 12√2