a Using the substitution y 5x, show that the equation 5 2x 1 5 x 1 2 2(5 x ) can be written in the form ay 2 by 2 0, where a and b are constants to be found b Hence solve the equation 5 2x 1 5 x 1 2 2(5 x ) ...

a Given 52x1 5x1 2 25x Substituting y 5x we get y 5x 52x1 5x1 2 2 ...

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 5^2x+1 – 5^x+1 + 2 = 2(5^x) can be written in the form ay² + by + 2 = 0, where a and b are constants to be found.

b. Hence solve the equation 5^2x+1 – 5^x+1 + 2 = 2(5^x).

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Cambridge IGCSE And O Level Additional Mathematics Coursebook

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Authors: Sue Pemberton

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a. Using the substitution y = 5x, show that the equation 5 2x+1 5 x+1 +

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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

Cambridge IGCSE And O Level Additional Mathematics Coursebook

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