Question

Which of the following is not a perfect square trinomial?
A.


144 + 24y + y2


B.


100 – 20y + y2


C.


81 + 18y + y2


D.


121 + 11y + y2

Answer 1

D isn't.

Answer 2

thanks

Answer 3

If \[\huge \color{red} {ax^2+bx+c}\] trinomial's discriminant equals 0 then it is a perfect square.

Answer 4

Your Welcome:) I'm learning the same stuff now, too:-)

Answer 5

\[\huge \color {red}{Delta =b^2-4ac =0 }\]

Answer 6

You want me to keep going or @wmckinely 's answer is enough?

Answer 7

thats fine

Answer 8

Ok