Question

Determine whether n^2+20n+100 is a perfect square trinomial

Answer 1

`(a + b)^(2) = a^(2) + 2ab + b^(2)`


`= n^(2) + 2(n)(10) + 10^(2)`

n here represent the a in the formula, 2(a)(b) = 2(n)(10), and 10^2 = 100


`(n + 10)^(2)`