Question

Question 4 of 5

Answer 1

Answer:

4x -5)(16x² +20x +25)

Step-by-step explanation:

The factoring of the difference of cubes has a standard form:

  a³ -b³ = (a -b)(a² +ab +b²)

Here, your knowledge of the cubes of small integers tells you that ...

  64 = 4³

  125 = 5³

So, in the above, we have

a = 4x, b = 5

and the factored form is  

(4x -5)(16x² +20x +25)

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