Si se factoriza la expresión 72x2 – x – 1, se obtiene:
a.
(9x – 1)(8x – 1)
b.
(9x + 1)(8x – 1)
c.
(x + 8)(x – 9)
d.
(x + 9)(x – 8)
a.
(9x – 1)(8x – 1)
b.
(9x + 1)(8x – 1)
c.
(x + 8)(x – 9)
d.
(x + 9)(x – 8)
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