brandy42 brandy42

09-05-2017
Mathematics

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(7x+3)(7x-3) simplified form?

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Аноним Аноним

09-05-2017

49x^2-9 is the answer.

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09-05-2017

(a+b)(a-b) = a^2 - b^2

(7x+3)(7x-3) = (7x)^2 - (3)^2
= 49x^2 - 9

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