Q. Factor out the greatest common factor. If the greatest common factor is 1, just retype the polynomial.7k2−2k
Identify GCF of Terms: We need to find the greatest common factor (GCF) of the terms 7k2 and 2k. To do this, we look for the highest number that divides both coefficients (7 and 2) and the highest power of k that is present in both terms.
Coefficients GCF: 1: The coefficients 7 and 2 are both prime numbers and do not have any common factors other than 1. Therefore, the GCF of the coefficients is 1.
Variable Part Analysis: For the variable part, the lowest power of k present in both terms is k1 (or simply k), since 7k2 has k2 and 2k has k1.
Combine Coefficients and Variable: Combining the GCF of the coefficients and the variable part, we find that the GCF of 7k2 and 2k is k.
Factor Out GCF: Now we factor out the GCF k from each term:7k2=k×7k2k=k×2
Write Factored Polynomial: Writing the polynomial with the GCF factored out, we get: 7k2−2k=k(7k−2)