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21-09-2016
Mathematics

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Simplify: (3a – 4b)(a + b). . A.. 3a2– ab – 4b2. . B.. 3a2 – 7ab – 4b2. . C.. 3a2 – 12ab – 4b2. . D.. 3a2 + ab – 4b2.

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taskmasters taskmasters

23-09-2016

To simplify the expression, we distribute terms accordingly. It is done as follows:

(3a – 4b)(a + b)
3a² + 3ab -4ab -4b²
3a² - ab -4b²

Therefore, the correct answer is option A, 3a^2– ab – 4b^2.

Hope this answers the question. Have a nice day. Please feel free to ask more questions.

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