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15 votes
15 votes
Factor completely 2x2 – X – 4.

(3x - 1)(x + 4)
(3x + 4)(x - 1)
(3x − 2)(x + 2)
-
(3x – 4)(x + 1)
-

User Nisrine
by
2.9k points

1 Answer

14 votes
14 votes


2x {}^(2) - x - 4


x = ( - ( - 1) + √(1 - 4(2)( - 4)) )/(2(2)) = (1 + √(33) )/(4)


x = (1 - √(33) )/(4)


(x - (1 + √(33) )/(4) )(x - (1 - √(33) )/(4) )


(4x - 1 - √(33) )(4x - 1 + √(33) )

User Chf
by
3.3k points