Factor 125x^3-8

Problem

125*x3−8

Solution

1. Identify the expression as a difference of two cubes, which follows the form a3−b3

2. Determine the cube roots of each term to find a and b

3. Calculate a by taking the cube root of 125*x3

a=5*x

4. Calculate b by taking the cube root of 8

b=2

5. Apply the formula for the difference of cubes: a3−b3=(a−b)*(a2+a*b+b2)

6. Substitute the values of a and b into the formula.

(5*x−2)*((5*x)2+(5*x)*(2)+2)

7. Simplify the terms inside the second set of parentheses.

(5*x−2)*(25*x2+10*x+4)

Final Answer

125*x3−8=(5*x−2)*(25*x2+10*x+4)

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