How do you factor #81x^2 – 36x + 4#?
1 Answer
Mar 18, 2018
Explanation:
This is a perfect square trinomial in the form:
#A^2-2AB+B^2 = (A-B)^2#
as we can see:
#81x^2-36x+4 = (9x)^2-2(9x)(2)+2^2 = (9x-2)^2#
