Report - Factoring Decision Tree. Expression GCF Step 1 GCF 14x + 21 = 9x – 12y = 2x 2 + 6x + 4 = 5ab 2 + 10a 2 b 2 + 15a 2 b = 7(2x + 3) 3(3x – 4y) 2(x 2 + 3x.

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