Recognize as difference of cubes: Recognize the expression as a difference of cubes. 125n3−8m3 can be written as (5n)3−(2m)3, since 125=53 and 8=23.
Apply formula: Apply the difference of cubes formula.The difference of cubes formula is a3−b3=(a−b)(a2+ab+b2). Here, a=5n and b=2m.
Substitute into formula: Substitute a and b into the formula.Using the formula from Step 2, we get:(5n−2m)((5n)2+(5n)(2m)+(2m)2)
Expand terms: Expand the terms inside the parentheses.Now we calculate each term:(5n)2=25n2(5n)(2m)=10nm(2m)2=4m2So the factorization becomes:(5n−2m)(25n2+10nm+4m2)
Write final factorized form: Write the final factorized form.The completely factorized form of 125n3−8m3 is:(5n−2m)(25n2+10nm+4m2)