I need help with this Algebra problems here

1) x2- x -12 =

A. (x + 3) (x - 4)
B. prime
C. (x + 4) (x -3)
D. (x + 1) (x -12)

2) x2 + 3x -40 =

A. (x + 8) (x - 5)
B. Prime
C. (x -8) (x + 1)
D. (x -8) (x + 5)

3) x2 -3x -10 =

A. (x -2) (x + 1)
B. (x + 2) (x - 5)
C. (x -2) (x + 5)
D. Prime

4) x2 – x -48 =

A. (x - 6) (x + 8)
B. (x -48) (x + 1)
C. Prime
D. (x + 6) (x -8)

5) 2x2 – 2x -12 =

A. (2x + 4) (x -3)
B. Prime
C. 2(x + 2) (x -3)
D. 2(x -2) (x + 3)

6) 3x2 -24x + 45 =

A. Prime
B. (3x -9) (x -5)
C. 3(x -3) (x -5)
D. 3(x -15) (x +1)

7) 2x3 + 2x2 -40x =

A. Prime
B. (2x2 + 8x) (x -5)
C. 2x(x -4) (x + 5)
D. 2x(x + 4) (x -5)

8) x2 + 2xy -24y2 =

A. (x - 6y) (x + 4y)
B. (x - 6y) (x + y)
C. (x + 6y) (x -4y)
D. 2x(x + 4) (x -5)


9) u2 -2uv -35v2 =

A. (u - 5v) (u + v)
B. (u + 5v) (u -7v)
C. (u -v) (u + 7v)
D. (u - 5v) (u +7v)

10) u2 -4uv -60v2 =

A. (u - 6v) (u + 10v)
B. (u - 6v) (u + v)
C. (u + 6v) (u - 10v)
D. (u - v) (u + 10v)

11) x2 + 6xy -112y2 =

A. (x - 14y) (x + y)
B. (x -y) (x + 8y)
C. (x - 14y) (x + 8y)
D. (x + 14y) (x - 8y)

1) A. (x + 3)(x - 4)

2) A. (x + 8)(x - 5)

3) B. (x + 2)(x - 5)

4) C. Prime

5) C. 2(x + 2)(x - 3)

6) C. 3(x - 3)(x - 5)

7) C. 2x(x - 4)(x + 5)

8) C. (x + 6y)(x - 4y)

9) B. (u + 5v)(u - 7v)

10) C. (u + 6v)(u - 10v)

11) D. (x + 14y)(x - 8y)

1) x^2 - x - 12 =
x^2 + 3x - 4x - 12 =
x(x + 3) - 4(x + 3) =
(x + 3)(x - 4)

One question at a time.