SOLUTION: Please help me solve this problem. I think I know the answer, but I need to make sure it's right. A man born in the year x^2 died, on his 81th birthday in the year (x + 1)^2

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Question 168465: Please help me solve this problem. I think I know the answer, but I need to make sure it's right.

A man born in the year x^2 died, on his 81th birthday in the year (x + 1)^2 .
In what year was he born? Please explain your answer.
Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
%28x%2B1%29%5E2-x%5E2=81
x%5E2%2B2x%2B1-x%5E2=81
2x%2B1=81
2x=80
x=40
x%5E2=1600
Answer: He born in the year 1600