Resolver (a + b - 2)(a + b) - (a - b) ^ 2 + 1 | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$(a+b-2)(a+b)-(a-b)^{2}+1$$