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14
1 x 14
2x² - 15x + 7
2x² - 1x - 14x + 7
x(2x - 1) - 7(2x - 1)
(x - 7)(2x - 1)
4 + 5x + x² → 4 x 1
4
1 x 4
4 + 5x + x²
4 + 4x + 1x + x²
4(1 + x) + x(1 + x)
(4 + x)(1 + x)