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vikacorsa
@vikacorsa
July 2022
1
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(7x-10) (7x+10)-49x²-8x+17 при x=130
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spasibo3pajbrh
(7x-10) (7x+10)-49x²-8x+17=
=49x²-100-49x²-8x+17=-8x-83=
=-8•(130)-83=-1040-83=-1123
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=49x²-100-49x²-8x+17=-8x-83=
=-8•(130)-83=-1040-83=-1123