Practice problem
Write 511×489511\times 489511×489 as the difference of two squares.
5112−4892511^2 -489^25112−4892
5002−112500^2 -11^25002−112
(500−489)2(500-489)^2(500−489)2
None of the above
Type a concept, like “slope” or “photosynthesis”.