Which of the following is a factor of 64x3 + 343?

4x – 7

16x2 – 28x + 49

16x2 + 56x + 49

None of the above

Question

Which of the following is a factor of 64x3 + 343?

 4x – 7

 16x2 – 28x + 49

 16x2 + 56x + 49

 None of the above

anonymous · Answer

Is 'x' your sign for multiplication or a variable?

anonymous · Answer

a variable

anonymous · Answer

Well that's interesting. I don't know how good I'll be at it, but I'll try it out...

anonymous · Answer

thankyou

anonymous · Answer

I feel like B is the most logical answer. Then again I could be wrong. I'll try the equation again, but my keyboard is messed up and I can't use most of my symbols. So I'll try it again.

anonymous · Answer

no. i think you´re right... thankyou

anonymous · Answer

Yes. (16x2 – 28x + 49)(4x + 7) = 64x3 + 343
         (above this here)

anonymous · Answer

So the answer would be "B.16x2 – 28x + 49".