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There are no real solutions to this equation. Applying the quadratic formula, we find two imaginary solutions.

x = 2.315032397181517i
x = -2.315032397181517i
where i is the square root of negative one.

If that were 64x3, it would have been (4x + 7)(16x2 - 28x + 49)

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11y ago
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Wiki User

11y ago

This would have been easier to answer if you had told us what the following choices were, but if they include (4x + 7) or (16x2 - 28x + 49), choose one of them.

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Wiki User

10y ago

64X - 8

8(8X - 1)
==========simplest factoring here

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Wiki User

6y ago

You can't, unless you are willing to use imaginary numbers.

mm + 64 = ( m + 8i ) * ( m - 8i )

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Wiki User

8y ago

(8x - 11)(8x + 11)

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Q: Which of the following is a factor of 64x3 plus 343?
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