a. Using the substitution y = 5x, show that the equation 5 2x+1 5 x+1 +
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a. Using the substitution y = 5x, show that the equation 52x+1 – 5x+1 + 2 = 2(5x) can be written in the form ay2 + by + 2 = 0, where a and b are constants to be found.
b. Hence solve the equation 52x+1 – 5x+1 + 2 = 2(5x).
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a Given 52x1 5x1 2 25x Substituting y 5x we get y 5x 52x1 5x1 2 2...View the full answer
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Related Book For
Cambridge IGCSE And O Level Additional Mathematics Coursebook
ISBN: 9781108411660
2nd Edition
Authors: Sue Pemberton
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