N1
а) 16a^2 - 4b^2 = 4(4a^2 - b^2) = 4(2a - b)(2a + b)
б) x^2 - 1 7/9 = x^2 - 16/9 = (x - 4/3)(x + 4/3)
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Answers & Comments
N1
а) 16a^2 - 4b^2 = 4(4a^2 - b^2) = 4(2a - b)(2a + b)
б) x^2 - 1 7/9 = x^2 - 16/9 = (x - 4/3)(x + 4/3)