To find the greatest common factor (GCF) of the expressions \(12a^4b^7\) and \(18a^5b^3\), we can break down each part.
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Numerical Coefficients:
- The coefficients are 12 and 18.
- The factors of 12: \(1, 2, 3, 4, 6, 12\)
- The factors of 18: \(1, 2, 3, 6, 9, 18\)
- The GCF of 12 and 18 is 6.
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Variable Parts:
- For \(a^4\) and \(a^5\), the GCF is \(a^{\min(4, 5)} = a^4\).
- For \(b^7\) and \(b^3\), the GCF is \(b^{\min(7, 3)} = b^3\).
Putting this all together, we have:
- GCF = \(6a^4b^3\)
Thus, the answer is: 6a4b3 (or in superscript form, \(6a^{4}b^{3}\)).