How do you factor $25b^2 -60b +36$ ?

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Answer 1 · 2015-06-03T18:16:10

$25b^2 - 60b + 36$ is of the form $A^2-2AB+B^2$ where $A=5b$ and $B=6$ .

This is a perfect square trinomial...

$25b^2-60b+36 = (5b)^2-(2xx5bxx6)+6^2$

$=(5b-6)^2$

How do you factor 25b^2 -60b +3625b^2 -60b +36?