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natasha778
@natasha778
August 2022
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упростить и вычислить при х=-3
2-(х-1)(х+1)
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2-(x-1)(x+1)=2-(x²-1)=2-x²+1=3-x²
при х=3 3-x²=3-3²=3-9=-6
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Verified answer
2-(x-1)(x+1)=2-(x²-1)=2-x²+1=3-x²при х=3 3-x²=3-3²=3-9=-6