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Mathematics 18 Online
OpenStudy (anonymous):

Which of the following is a factor of 7x^2 - 12x - 4? a. 7x - 2 b. x + 2 c. x - 4 d. None of the above

OpenStudy (anonymous):

@ankit042

OpenStudy (ankit042):

do you know how to factorize?

OpenStudy (anonymous):

Using foil...?

OpenStudy (ankit042):

7x^2 - 12x - 4 can be written as 7x^2 -7x -4x-4

OpenStudy (anonymous):

Okay

OpenStudy (ankit042):

now 7x(x-1)-4(x-1) (7x-4)(x-1) are the factors

OpenStudy (anonymous):

So since that's not an option would I choose D "None of the above" ? @ankit042

OpenStudy (ankit042):

Yes!

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