(6a - 7b)² = ______
36a² - 49b²
36a² + 49b²
36a² - 84ab + 49b²
36a²+ 84ab + 49b²
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Answer:
(6a - 7b)square
(6a)square - 2X6aX7b + (7b)square
36a square - 84a + 49b square
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