emmaerinclark emmaerinclark

23-07-2020
Mathematics

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Let b be a number such that (2b+5)(b-1)=6b. What is the largest possible value of b? Express your answer as a common fraction.

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MaxSilverstein MaxSilverstein

23-07-2020

Answer:

Foil the expression and solve the derivative with respect to b at f'(x)=0[tex]2b^2+3b+5=6b\\d/dx(2b^2+9b+5=0)\\4b+9=0\\b=-9/4[/tex]

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