Answer:
5x3-6x2-4x+7...(a)
Step-by-step explanation:
(5x3-12x+4)+ (6x2-4x+3)
15-12x+4+12-4x+3
5x3-6x2-4x+7
i think the answer to this problem is49
It seems you just keep adding 3
-2; 1; 4; 7; 10; 13; 16; 19; 22; 25; 28; 31; 34; 37
37 is the fourteenth term.
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