Posted by **nice** on Sunday, March 10, 2013 at 3:38am.

The difference of the cubes of two consecutive odd positive integers is 400 more than the sum of their squares. Find the sum of the two integers.

- math -
**Steve**, Sunday, March 10, 2013 at 7:15am
a^3 - b^3 = 400+a^2+b^2

also, a=b+2, so

(b+2)^3 - b^3 = (b+2)^2 + b^2 + 400

b=9, so a=11

11^3-9^3 = 1331-729 = 602

11^2+9^2+400 = 602

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