Q: Is 81c squared plus 72c plus 16 a perfect square trinomial?

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Yes because its discriminant is equal to zero

Yes (x+3(x+3)

It's a second degree trinomial expression in x. It's a perfect square, being the square of (x-2).

The given quadratic expression can not be factored as a perfect square.

Yes.

Related questions

Yes because its discriminant is equal to zero

Yes (x+3(x+3)

No.

It's a second degree trinomial expression in x. It's a perfect square, being the square of (x-2).

The given quadratic expression can not be factored as a perfect square.

false!

Yes.

True

Yes because if x2-14x+49 then it is (x-7)(x-7) when factored

Factors are (7y - 3)(7y - 2) so it's not a perfect square.

64

Yes. (Y+5)2