Question

Factor completely: 3x^2 + 2x - 1

(3x + 1)(x - 1)

(3x + 1)(x + 1)

(3x - 1)(x + 1)

(3x - 1)(x - 1)

Answer 1

its the 3rd option

Answer 2

x² + 1/3x = 1/3 + (1/3)²
x² + 1/3x = (3 + 1)/9
(x + 1/3)² = 4/9
x + 1/3 = ± 2//3

= x + 1/3 - 2/3, = x - 1/3, = 3x - 1
= x + 1/3 + 2/3, = x + 3/3, = x + 1

Answer 3

Factor 3x^2+2x−1:
1. Multiply 3 by -1, which is -3.
2. Which two numbers add up to 2 and multiply to -3?
3. Answer: 3 and -1
4. Rewrite 2x as the sum of 3x and −x:
3x^2+3x−x−1

2 Factor out common terms in the first two terms, then in the last two terms
3x(x+1)−(x+1)

3 Factor out the common term x+1
(x+1)(3x−1)

Answer 4

(3x-1)(x+1)

Answer 5

Thanks All!!