A=-1 2. (a- 2)(a+1)-(a+3)(a-5)

Question

A=-1
2.
(a- 2)(a+1)-(a+3)(a-5)

Answer 1

Вроде так.......... ...

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Answer 2

(-1-2)(-1+1)-(-1+3)(-1-5)=-3×0-2×-6=0-(-12)=12