2.1 Simplify fully , WITHOUT using a calculator:
(4)
2.2 Solve for 𝑥, WITHOUT using a calculator:
2.2.1 
(3)
2.2.2 
(4)
2.3 If 
and 
, determine the value of ( 𝑥 + 𝑦 )2 (3)
2.4 Show WITHOUT, using a calculator, that 
(4)
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