Question

Brainliest? help please-

Answer 1

Answer: 81

To get this answer, you do two things
1) Take half of the x coefficient 18 to get 9
2) Square the result from the previous step to get 9^2 = 9*9 = 81

This value is added on to get x^2+18x+81 which factors to (x+9)^2 confirming we have a perfect square trinomial

Answer 2

X would become 1 to the second power witch is 2 spit will be 20x