(4 – √5)(9 + √5)

(9 + √2)(4 – √2)

(4 + √7)(2 – √7)

(10 + √13)(10 + √13)

(9 – √3)(9 + √3)

(7 + √5)(6 – √5)

(5 – √3)(9 – √3)

(3 – √2)(5 – √2)

(10 + √7)(4 – √7)

(2 + √11)(7 + √11)

(5 + √3)(9 – √3)

(9 – √7)(9 – √7)

(4 + √5)(3 + √5)

(8 – √2)(3 + √2)

(8 – √3)(6 + √3)

(8 – √2)(7 + √2)

(5 + √3)(7 – √3)

(5 – √5)(6 + √5)

(4 – √5)(8 – √5)

(5 + √3)(9 + √3)

(9 – √3)(7 + √3)

(8 – √7)(7 + √7)

(9 + √11)(9 + √11)

(4 – √3)(10 – √3)

(9 + √13)(7 + √13)