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18-03-2018
Mathematics

contestada

Which of the following shows a factor of 81g^2 - 64?
A. 9g - 32
B. 9g + 8
C. 81g - 8
D. 40.5g - 32

Respuesta :

Аноним Аноним

18-03-2018

[tex]81g^2 - 64[/tex]

[tex]= (9g)^2 - (8)^2[/tex]

[tex]= (9g + 8)(9g - 8)[/tex]

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Answer B: (9g + 8) is factor
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