simplify the following expressions.
* (5+√7)(2+√5)
* (5+√5)(5-√5)
* (√3+√7)³
*(√11-√7)(11+√7)
Simplify the following expressions :
(i) (11+√11)(11−√11)
(ii) (5+√7)(5−√7)
(iii) (√8−√2)(√8+√2)
(iv) (3+√3)(3−√3)
(v) (√5−√2)(√5+√2)