Nasser is following this recipe to make flapjacks. Nasser uses 1.2 kg of margarine.
How many flapjacks is Nasser making?

Recipe: Makes 14 flapjacks
125 g sugar
150 g margarine
240 mL syrup
300 g oats
40 g sultanas

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

ummm seems that u didnt post the attachement !