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Mathematics 20 Online
OpenStudy (anonymous):

factor completely: 36x^2 - 84x +49

jimthompson5910 (jim_thompson5910):

36x^2-84x+49 36x^2-42x-42x+49 (36x^2-42x)+(-42x+49) 6x(6x-7)+(-42x+49) 6x(6x-7)-7(6x-7) (6x-7)(6x-7) (6x-7)^2 So 36x^2-84x+49 completely factors to (6x-7)^2

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