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4n²-3, 4n²-4, 4n² -11
P=1/2ab
c=4n²-3,
b=4n²-4,
a= 4n² -11
P=1/2(4n² -11)(4n²-4)
P=(4n² -11)(2n²-2)=8n⁴-8n²-22n²+22=8n⁴-30n²+22