Step by step solution :
Step  1  :
Equation at the end of step  1  :
  ((3x2 +  2x) -  1) -  (x2 - 3x + 4)
Step  2  :
Trying to factor by splitting the middle term
 2.1     Factoring  2x2+5x-5 
The first term is,  2x2  its coefficient is  2 .
The middle term is,  +5x  its coefficient is  5 .
The last term, "the constant", is  -5 
Step-1 : Multiply the coefficient of the first term by the constant   2 • -5 = -10 
Step-2 : Find two factors of  -10  whose sum equals the coefficient of the middle term, which is   5 .
      	-10     +    	1     =    	-9  
      	-5     +    	2     =    	-3  
      	-2     +    	5     =    	3  
      	-1     +    	10     =    	9  
Observation : No two such factors can be found !!
Conclusion : Trinomial can not be factored
Final result :
  2x2 + 5x - 5
brainliest plz tried rlly hard on this