Monday 21 November 2016

EXPONENTIALS 8


If a2 – 20 = 44; find a.

a2 = 44+ 20

a2 = 64

√a2 = √64    keep root sign on both sides

a = √64   

a=8

Hence a = 8

TRY THIS………..


If a2 – 21 = 60; find a.


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