doughae doughae

21-07-2017
Mathematics

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what is the expanded form of the given binomial (5x+9)^2

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choixongdong choixongdong

21-07-2017

(5x+9)^2
= (5x)^2 + 2 (5x) (9) + 9^2
= 25x^2 + 90x + 81

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