m3rk098 m3rk098

26-04-2018
Mathematics

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hey:) can you please help me posted picture of question

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11beehshahbaz 11beehshahbaz

26-04-2018

Option D gives the correct answer.

Step by step solution is listed below:

[tex](7 x^{2} -4x-7)(2x+8) \\ \\ =2x(7 x^{2} -4x-7)+8(7 x^{2} -4x-7) \\ \\ =14x^{3}-8 x^{2} -14x+56 x^{2} -32x-56 \\ \\ =14 x^{3}+48 x^{2} -46x-56 [/tex]

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