Factor  $7k^2-18k+8$  

(a)  

Factor  $3v^2-4v-15$  

(a)  

Factor  $5x^2-2x-7$  

(a)  

Factor  $7m^2+6m-1$ 

(a)  

Factor  $6n^2+7n+2$  

(a)  

Factor  $4n^2-21n+20$  

(a)  

Factor  $4r^2+12r-7$  

(a)  

Factor  $6n^2-11n+3$  

(a)  

Factor  $6a^2+5a-6$  

(a)