Oh No, Large Squares!
Algebra
Level
4
If you were only given that
\[438271606^{2} = 192082000625819236,\]
can you find the sum of digits of the exact value of \(561728395^{2}\)?
Notes: Yes, don't use Wolfram Alpha or a calculator to solve this (though you may use a calculator to calculate the digit sum).
by
Steven Yuan