Quadratic Expression Factoring (when a = 1)

Factor completely.
 $x^2-5x+4$  

• (x + 2)(x + 2)

• (x - 4)(x - 1)

• (x + 4)(x + 1)

• (x - 2)(x - 2)

Factor completely.
 $x^2\ -\ 8x\ -20$  

• (x + 10)(x - 2)

• (x + 5)(x - 4)

• (x + 2)(x - 10)

• (x + 4)(x - 5)

Factor completely.
 $x^2+10x+24$  

• (x + 4)(x + 6)

• (x + 3)(x + 8)

• (x - 4)(x - 6)

• (x - 3)(x - 8)

Factor completely.
 $x^2-x-30$  

• (x + 5)(x - 6)

• (x - 5)(x - 6)

• (x + 5)(x + 6)

• (x - 5)(x + 6)

Factor completely.
 $x^2-19x+48$  

• (x + 24)(x + 2)

• (x - 3)(x - 16)

• (x + 3)(x + 16)

• (x - 24)(x - 2)

Factor completely.
 $x^2+19x+18$   

• (x + 6)(x + 3)

• (x + 18)(x + 1)

• (x + 2)(x + 9)

• (x + 4)(x + 14)

Factor:
x² + 5x - 24

• (x - 8)(x + 3)
• (x + 8)(x - 3)
• (x + 6)(x - 4)
• (x + 12)(x - 2)

Factor
x² - 5x - 36

• (x - 4)(x + 9)
• (x - 6)(x + 6)
• (x + 4)(x - 9)
• (x -12)(x + 3)

Factor:  x² + 29x + 100

• (x + 5)(x + 20)
• (x + 4)(x + 25)
• (x + 2)(x + 50)
• (x + 10)(x + 10)

Factor:  x² + x - 42

• (x + 42)(x - 1)
• (x + 6)(x - 7)
• (x + 7)(x - 6)
• (x + 1)(x - 42)