what is (2-1)(2+1) pls
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Answered by
1
Answer:
2(2+1)-1(2+1)
=4+2-2-1
=6-2-1
=4-1
=3
Therefore,the answer will be = 3
OR
As we know the formula (a+b)(a-b) = (a) ^2-(b) ^2
So, (2)^2 - (1)^2
= 4-1
= 3
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