Grade 11Algebra
solve log5120 + (x-3) - 2 * log5 (1-5(x-3)) = -log5 (0.2- 5(x-4))
solve log5120 + (x-3) - 2 * log5 (1-5(x-3)) = -log5 (0.2- 5(x-4))
1 Answer
Nicho priyatham
bring all log terms to 1 side and put (x-3) on other side now
now add all log terms using the formulas
- mlogab=logabm
- log a +log b =log(ab)
- log a-log b =log(a/b)
and REMOVE log on both sides to get the equation
and put 5x-3=a to get the equation
(1-a)2=24a(1-a)
on solving v get a= 1,1/25
so x=3,1
BUT wn we put x=3 in expression we get log50 wh is not define so
x=1 is oniy solution
PLZ APPROVE IF USEFULL incase of any doubts drop them in ans box
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