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2 years ago

9

I understand the switching of positive and negative signs but I don’t understand how to get to the next step which is the answer

. It’s factoring.

1 answer:

Finger [1]2 years ago

6 0

2ab - 3a = a.(2b-3)

now the same thing

let's say n=1

a.(2b-3) + n.(2b-3) = (2b-3).(a+n)

Understood?

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