How do you factor #4ab+1-2a-2b#?

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Answer 1 · 2018-04-21T00:18:34

#4ab+1-2a-2b=(1-2a)(1-2b)#

#4ab+1-2a-2b#

It's not really necessary, but let's commute the terms a little.

#=1-2a-2b+4ab#

Now factor out #-2b# from the last two terms.

#=(1-2a)-2b(1-2a)#

Now factor #(1-2a)# out of both terms.

#=(1-2a)(1-2b)#