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Factor completely 3x^2+ 2x -1. O (3x + 1)(x - 1) O (3x + 1)(x + 1) O (3x - 1)(x + 1) O (3x - 1)(x - 1)

Factor completely 3x^2+ 2x -1. O (3x + 1)(x - 1) O (3x + 1)(x + 1) O (3x - 1)(x + 1) O (3x - 1)(x - 1)
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3 votes
Factor completely 3x^2+ 2x -1.

O (3x + 1)(x - 1)
O (3x + 1)(x + 1)
O (3x - 1)(x + 1)
O (3x - 1)(x - 1)

asked
User TheGentleOne
by
8.2k points

1 Answer

5 votes

Answer:

option C

Explanation:


3x^2+2x-1\\\\=(3x+a)(x+b)\\\\(3b+a)=2\\\\ab=-1

and here we think of b=1 and a=-1

so we have


(3x-1)(x+1)

answered
User Arpit Tambi
by
8.7k points
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