Option C is the correct answer.
The given expression is [tex](14x^{3}y^{-4} )(4x^{-5}y^{4} )[/tex].
What is an expression?
In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.
Now, [tex](14x^{3}y^{-4} )(4x^{-5}y^{4} )=56x^{3-5}y^{-4+4}[/tex]
[tex]=56x^{-2} =\frac{56}{x^2}[/tex]
Therefore, option C is the correct answer.
To learn more about the multiplication of algebraic expression visit:
https://brainly.com/question/28036387.
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