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(n+32)(n-39)
=n²-7n-1248
(n-120)(n+127)
=n²+7n-15240
(n-121)(n+128)
=n²+7n-15488
(n+32)(n-39)
=n²-7n-1248
(n-120)(n+127)
=n²+7n-15240
(n-121)(n+128)
=n²+7n-15488
(n+32)(n-39) = n^2 - 7n - 1248
(n-120)(n+127) = n^2 + 7n - 15240
(n-121)(n+128) = n^2 +7n - 15488
(n-120)(n+127) = n^2 + 7n - 15240
(n-121)(n+128) = n^2 +7n - 15488