Science / Difference of Squares (algebra)

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Can you name the product of these differences of squares (algebra)?

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(a+b)*(a-b)producta^2 - b^2
54*46
814*786
87*73
308*292
208*192
107*93
340*260
21*19
604*596
509*491
325*275
714*686
510*490
530*470
715*685
(a+b)*(a-b)producta^2 - b^2
415*385
65*55
205*195
76*64
615*585
808*792
811*789
43*37
713*687
99*81
112*88
105*95
32*28
725*675
310*290

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