Saturday, 17 March 2018

EXPONENTIALS 2



If 52w (40w) = 10w-40 ; Find w.

Solution

52w (40w) = 10w-40

(52)w (40w) = 10w-40

(25)w (40w) = 10w-40

(25 x 40)w = 10w-40

(1000)w = 10w-40

(103)w = 10w-40

103w = 10w-40  (Bases are alike, so they cancel out)

3w = w-40
3w - w = -40
2w = -40
2w = -4020
2       2

w = -20

TRY THIS…………………………….

If 32t (4t) = 6t-10 ; Find t.

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