Question 1147629
n + 10 = (n - 10)²
<pr>
n + 10 = n² - 20n + 100
<pr>
n² - 21n + 90 = 0
<pr>
(n - 15)(n - 6) = 0
<pr>
n = 15 and n = 6
<pr>
You could be either 6 or 15.
<pr>
Check it:
6 + 10 = (6 - 10)² [CHECKS]
15 + 10 = (15 - 10)² [CHECKS]