Question 2 (ii) Simplify (3+√3)(3−√3) .
(3+√3)(3−√3) =32−(√3)2 [Using the identity (a+b)(a−b)=a2−b2]
= 9 - 3 = 6
Question 7(ii) Simplify: (ii) (−3)×(−2)3
Question 3(ii) Simplify: (a2+5)(b3+3)+5