Question

(2+n)^2=2^2+n^2 . find n​

Answer 1

Answer:

(2+n)² = 2² + n²

(2² + 2(2)(n) + n²) = 4 + n²

4 + 4n + n² = 4 + n²

4n = 4 - 4 + n² - n²

4n = 0

n = 0