Saturday 19 November 2016

EXPONENTIALS 7


If 52w (16w) = 20 ; Find w.

Solution

52w (16w) = 20

(52)w (16w) = 20

(25)w (16w) = 20

(25 x 16)w = 10

(400)w = 20

(202)w = 20

202w = 201   (Bases are alike, so they cancel out)

2w = 1

2w = 1
2       2

w = 1/2

TRY THIS…………………………….


NECTA 2004 QN. 4b


If 32t (4t) = 6 ; Find t.

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