Q3 of 51 Page 3

Simplify the following expressions :

(i) (11+) (11-)


(ii) (5+) (5-)


(iii)


(iv) (3+) (3-)


(v)

(i)


Because


= 121 - 11 = 110


(ii)


= 25 – 7 = 18


(iii)


= 8 – 2 = 6


(iv)


= 9 – 3 = 6


(v)


= 5 – 2 = 3


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Simplify the following expressions :

(i) (4+) (3+)


(ii) (3+) (5 -)


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