5A Day 6 Solve by Factoring (Grouping)

Factor p³ - 3p² - 16p + 48 

• p² ( p - 3) (p - 3) 
• (p² - 16) (p - 3)  
• (p + 4) (p - 4) (p - 3) 

Factor x³ + 2x² - 49x - 98 

• (x² - 49) (x + 2) 
• (x² - 49) (x + 2) (x + 2) 
• (x + 7) (x - 7) (x + 2) 

Factor by grouping
x³ - 4x² -4x + 16

• (x+4)(x+2)
• (x-4)(x² -4) 
• (x+4)(x² -4)
• (x-4)(x-2)

What is the GCF of 8c³+12c²+10c

• 2
• 4
• 2c
• 4c

Solve  $\left(x+2\right)\left(x-11\right)=0$  for x.

•  $x=-2$  or  $x=-11$  

•  $x=2$  or  $x=-11$  

•  $x=2$  or  $x=11$  

•  $x=-2$  or  $x=11$  

Solve  $\left(3x-7\right)\left(2x-8\right)=0$  for x

•  $x=-\frac{7}{3}$  or  $x=4$  

•  $x=-\frac{7}{3}$  or  $x=-4$  

•  $x=\frac{7}{3}$  or  $x=4$  

•  $x=\frac{7}{3}$  or  $x=-4$  

 $Solve\ by\ factoring\ by\ grouping:\ \ \ x^{2\ }+7x-2x-14=0$  

• x=2, x = -7

• x = -2, x = 7

• x= 2

• x = 2/7,  -7

 $0=3x^2+5x+9x+15$  Solve the equation by factoring by grouping:

• x=3, x =5

• x = -3, x = 0

• x = -5/3, x = -3

• x = 3/5, x = -3

 $6x^2+9x-2x-3=0$  Solve the equation by factoring by grouping:

• x=3/2, x = -9

• x = 3/2, x = 1/3

• x = -3/2, x = 1/3

• x = 3/2, x = -1/3

 $7x^{2\ }-4x-49x=-28$  Solve the equation by factoring:

• x = 4/7, x = 0

• x = 7, x = -4

• x = -7, x = 4/7

• x=7, x = 4/7