736²-264²+99.9²
= (736-264)(736+264) + (100-0.1)²
= 472×1000 + 100² - 2×100×0.1 + 0.1²
= 472000 + 10000 - 20 + 0.01
= 482000.01 - 20
= 481980.01
736²-264²+99.9²
= (736-264)(736+264) + (100-0.1)²
= 472×1000 + 100² - 2×100×0.1 + 0.1²
= 472000 + 10000 - 20 + 0.01
= 482000.01 - 20
= 481980.01