Question

What is the value of c so that y=x2+9x+c is a perfect square trinomial

Answer 1

so since I'm a GENIUS ik this *cough*

basically, bruuuh perfect squared trinomial is based on this pattern ax^2+ax+a well some -bleep- like that. so you have to solve for c in the equation to make it a "perfect trinomial square" now divide 9 divided by 2 which equals (
`(9)/(2)`)^2and you square both the 9 and um 2 which equals ur answer

!!! 81/4 !!!

hope that makes sense <33

Answer 2

C= 20.25

Half of 9 is 4.5 and 4.5 x4.5= 20.25