How to factorise

a²b² - 6abc + 9c²

can anyone explain it by step-by-step
pls ​

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

Liz is shipping a package to her friend.the maximum weight of a medium flat-rate box is 20 pounds,including the box which weighs 6 ounces.write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)