(5x – 2)

**Answer 1**

1) 5x^2 + 7x + 2

5x^2 + 5x + 2x + 2

5x ( x + 1) + 2( x+ 1)

( 5x + 2) ( x+1)

ANSWER = None of the above

2) 4x^2 + 5x – 6

4x^2 + 8x -3x -6

4x ( x + 2) -3( x+2)

( 4x -3) ( x+2)

ANSWER = 4x -3

3) x^3y^2 + 8xy^2 – 5x^2 – 40

xy^2 ( x^2 + 8) -5( x^2 + 8)

( xy^2 – 5) ( x^2 + 8)

ANSWER = ( xy^2 – 5)

4) x^3 + 3x^2 + 7x + 21.

x^2 ( x + 3) + 7 ( x+ 3)

( x^2 + 7) ( x+3)

ANSWER = None of the above

5) 2x^3 – 24x^2y + 12xy – 144y^2

(2x^3 – 24x^2y) + (12xy – 144y^2)

2x^2 ( x – 12y) + 12y ( x – 12y)

( 2x^2 + 12y) ( x – 2y)

2 ( x^2 + 6y) ( x- 2y)

6) 20x^2 – 28x – 48

4 ( 5x^2 – 7x – 12)

4 ( 5x^2 +5x -12x -12)

4 ( 5x ( x + 1) -12( x+ 1) )

4 ( 5x- 12) ( x+1) ANSWER