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vovlolka123
@vovlolka123
July 2022
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Решите
x(4x+11)-7x(x-1)=-2x(x+2)+1
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Shockwave745
4x²+11x-7x²+7x=-2x²-4x+1
-x²+22x-1=0
x²-22x+1=0
D=484-4=480
x1=(22+√480)/2=11+2√30
x2=11-2√30
4 votes
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Answers & Comments
-x²+22x-1=0
x²-22x+1=0
D=484-4=480
x1=(22+√480)/2=11+2√30
x2=11-2√30