factorise and solving problem :(

f(x)= 3x^2-7x-4 where x= -6
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1 Answer

 

       
  f(x)= (3xx-7x-4)
Use the quadratic formula:  
3(x-2.808)(x+0.475)    
  f(-6)= (3(-6)^2-7*(-6)-4)
  f(-6)= 146  
by Level 5 User (14.8k points)

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