Which value must be added to the expression x^2+12x to make it a perfect-square trinomial?

Question

asked Nov 3, 2020 96.7k views

1 Answer

Olegflo · Answer 1 · 2020-11-08T03:22:55+0000

Answer:

Add 36. The factored form is
(x+6)^2 .

Explanation:

A perfect square is a trinomial that factors into the form
(x+a)^2 . To find the value to add to it divide 20 by 2 and square it.

12/2 = 6

6*6 = 36

This means c=36. The factored form is
(x+6)^2 .