35ab-44b-28b в квадрате +55a

Question

35ab-44b-28b в квадрате +55a

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Answer 1

«1 способ»:
35ab - 44b - 28b² + 55a = (35ab + 55a) - (44b + 28b²) = 5a(7b + 11) - 4b(11 + 7b) = (5a - 4b)(7b + 11)
«2 способ»:
35ab - 44b - 28b² + 55a = (35ab - 28b²) + (55a - 44b) = 7b(5a - 4b) + 11(5a - 4b) = (7b + 11)(5a - 4b)