Question

Factorise
$4x {}^{2} - x - 4$
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Answer 1

Answer:

please Mark as a brainlist

Step-by-step explanation:

$4 {x}^{2} - x - 4 \\ 4( {x}^{2} - 1) - x - 1 + 1 \\ 4(x + 1)(x - 1) - 1(x + 1) + 1 \\ (x + 1)(4(x - 1) - 1) + 1 \\ (x + 1)(4x - 5) + 1$

Answer 2

Answer:

It's really vey urgent.please...just once!