Answer:
28+8+2
Step-by-step explanation:
-2(3x+12y-5-17x-16y+4)
-2(3x+12y-1-17x-16y+4)
-2(3+12-1-17-16)
-2(-14+12-1-16)
-2(-14+12-1-16y)
-2(-14-4-1)
(4x+3) (4x-3)
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