I NEED HELP ASAP!!! I need to determine the Unknown value that would make each trinomial a perfect square... X²-___x+81

Question

asked Jun 18, 2020 191k views

1 Answer

Arnaud Gourlay · Answer 1 · 2020-06-23T18:57:12+0000

Answer:

The number that would go in the blank to get a perfect square trinomial is 18

Explanation:

The middle term can always be found by taking twice of the square root of the final term.

2 * √81 = 18