Question

Finish the polynomial by adding one number to make it a perfect square

x^2+18x+

Answer 1

81

Explanation:

`{x}^(2) + 18x + {(( (1)/(2))(18)) }^(2)`

`{x}^(2) + 18x + {9}^(2)`

`{x}^(2) + 18x + 81`

`{(x + 9)}^(2)`