The answer is (a - b)² because squaring is simply a number times another number. In this case, you have (a - b) multiplied by each other, so you can just put it together, and make it (a - b)².
Hey there!!
General formula:
We have:
... (a-b)(a-b)
This could be written as (a-b)²
Hence, the answer is :
... (a-b)² or a²-2ab+b²
Hope my answer helps!
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