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Which value must be added to the expression x2 + 12x to make it a perfect-square trinomial?

Which value must be added to the expression x2 + 12x to make it a perfect-square trinomial?
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3 votes
Which value must be added to the expression x2 + 12x to make it a perfect-square trinomial?

asked
User DawidPi
by
8.0k points

2 Answers

5 votes
x^2 + 12x + 36 = (x +6)^2

answer
36
answered
User Srmark
by
8.3k points
2 votes
x^2+12x=0
(ax^2+bx)=0
(b/2)^2=(12/2)^2=(6)^2=36
x^2+12x+36=(x+6)^2
answered
User Umer Kiani
by
8.2k points
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