Is $9x^2 − 6x + 1$ a perfect square trinomial and how do you factor it?

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Answer 1 · 2015-06-03T19:51:32

Yes.

$9x^2-6x+1 = (3x)^2-(2xx3x xx1)+1^2 = (3x-1)^2$

You can recognise a perfect square trinomial as it takes the form:

$A^2+-2AB+B^2 = (A+-B)^2$

Is 9x^2 − 6x + 19x^2 − 6x + 1 a perfect square trinomial and how do you factor it?