Identify GCF: Identify the greatest common factor (GCF) of the terms 180x10 and 125x2. The GCF of the numerical coefficients 180 and 125 is 5. The GCF of the variable terms x10 and x2 is x2, since x2 is the highest power of x that divides both terms. Therefore, the GCF of the entire expression is 125x20.
Factor out GCF: Factor out the GCF from the expression.180x10−125x2=5x2(36x8−25)
Find further factorization: Look for further factorization within the parentheses.The expression inside the parentheses, 36x8−25, is a difference of squares since 36x8 is a perfect square (6x4)2 and 25 is a perfect square (5)2.The difference of squares can be factored as (a2−b2)=(a+b)(a−b).
Apply difference of squares: Apply the difference of squares factorization to the expression inside the parentheses. 36x8−25=(6x4)2−(5)2=(6x4+5)(6x4−5)
Combine with GCF: Combine the GCF with the factored form of the expression inside the parentheses.5x2(36x8−25)=5x2(6x4+5)(6x4−5)
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