Monday 1 May 2017

EXPONENTIALS 1



If y2 = 3, find y10- y4

Solution

= y10- y4

= (y2)5 - (y2)2  

= (3)5 - (3)2     remember y2 = 3

= 243  - 9   

= 234

Hence y10- y4 = 234.

TRY THIS……………….

If  y7 = 10, find y21- y14


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