Group the first two terms and the last two terms.

Factor out the greatest common factor (GCF) from each group.

Factor the polynomial by factoring out the greatest common factor, .

Factor by Grouping 49r^3+42r^2-42r-36

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# Factor by Grouping 49r^3+42r^2-42r-36

Group the first two terms and the last two terms.

Factor out the greatest common factor (GCF) from each group.

Factor the polynomial by factoring out the greatest common factor, .

Factor by Grouping 49r^3+42r^2-42r-36