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

asked Nov 3, 2018 119k views

3 votes

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5 votes

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

answer
36

Srmark answered Nov 3, 2018

7.4k 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

Umer Kiani answered Nov 7, 2018

7.3k points

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