Tick (✓) the correct answer:
4z2 − 8z + 3 = ?
(a) (2z − 1)(2z − 3)
(b) (2z + 1)(3 − 2z)
(c) (2z + 3)(3z − 1)
(c) (z − 1)(4z − 3)
$4 z^{2}-8 z+3$
$=4 z^{2}-6 z-2 z+3$
$=2 z(2 z-3)-1(2 z-3)$
$=(2 z-1)(2 z-3)$
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