Q15 of 84 Page 4

If x+= 3, Calculate x2 +, x3 +and x4+.

Given x+= 3


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13

Evaluate each of the following:

(i) (103)3


(ii) (98)3


(iii) (9.9)3


(iv) (10.4)3


(v) (598)3


(vi) (99)3

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Evaluate each of the following :

(i) 1113-893


(ii) 463+343


(iii) 1043+963


(iv) 933-1073

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If x4+=194, find x3 +, x2 +and x+

 17

Find the value of 27x3 + 8y3, if

(i) 3x + 2y = 14 and xy=8


(ii) 3x + 2y = 20 and xy=