Question

The square of the sum of a number and 9 is ??????

Answer 1

(x+9)²

Explanation:

The square of the sum of a number and 9 is in terms of x, is (x+9)²

Answer 2

`n-a\ number\\\\(n+9)^2=n^2+2(n)(9)+9^2=n^2+18n+81\\\\Used\ (a+b)^2=a^2+2ab+b^2`