Ответ:
4b-9-(9b²+48b+64)
4b-9-9b²-48b-64
-44b-73-9b²
-9b²-44b-73
(4b - 9) ^ 2 - (3b + 8) ^ 2 = 16b ^ 2 - 72b + 81 - 9b ^ 2 - 48b - 64 = 7b ^ 2 - 120b + 17
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Verified answer
Ответ:
4b-9-(9b²+48b+64)
4b-9-9b²-48b-64
-44b-73-9b²
-9b²-44b-73
Ответ:
(4b - 9) ^ 2 - (3b + 8) ^ 2 = 16b ^ 2 - 72b + 81 - 9b ^ 2 - 48b - 64 = 7b ^ 2 - 120b + 17