this question comes exponents 4ˆ²×-1=5ˆ×+² 11/6/2013 | Galeboe from New York, NY | 2 Answers | 0 Votes Mark favorite Subscribe Comment Comments can you please show me the step how you arrive to this answer 11/6/2013 | Galeboe from New York, NY Comment
4^(2x-1)=5^(x+2) <==Is this what you want? Take ln, (2x-1)ln4 = (x+2)ln5 Solve for x, x = (2ln5+ln4)/(2ln4 - ln5) = 3.95922 11/6/2013 | Robert J. Comment
This is a calculated answer: x = 0.6318 11/6/2013 | William S. Comment Comments Dear Galeboe: When I interpreted the problem, I interpreted it as (4^{2x}) - 1 = (5^{x}) + 2 which, of course is quite different from the way Robert interpreted the question, to wit 4^{(2*x-1)} = 5^{(x+2)} This is why learning to use parentheses and brackets is so important. Chances are I was trying to solve the wrong system of equations. 11/6/2013 | William S. Comment
Dear Galeboe: When I interpreted the problem, I interpreted it as (4^{2x}) - 1 = (5^{x}) + 2 which, of course is quite different from the way Robert interpreted the question, to wit 4^{(2*x-1)} = 5^{(x+2)} This is why learning to use parentheses and brackets is so important. Chances are I was trying to solve the wrong system of equations. 11/6/2013 | William S.
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