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lera666555
@lera666555
August 2022
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Решите уравнение!!!(5x-1)^2 - 2= (10x+1)^2 - 3
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mykola1996
(5x-1)²-2=(10x+1)²/4-3
(25x²-10x+1-100x²-20x-1+3)/4=0
(-75x²-30x+3)/4=0
-75x²-30x+3=0
D=b²-4ac=900+900=1800 √D=√1800=√100*18=10√9*2=30√2
x₁=(30+30√2)/-75*2=30(1+√2)/-150=(1+√2)/-5≈-0,48
x₂=(30-30√2)/-75*2=30(1-√2)/-150=(1-√2)/-5≈0,08
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lera666555
к большому сожалению, мы еще так не решаем(
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Answers & Comments
(25x²-10x+1-100x²-20x-1+3)/4=0
(-75x²-30x+3)/4=0
-75x²-30x+3=0
D=b²-4ac=900+900=1800 √D=√1800=√100*18=10√9*2=30√2
x₁=(30+30√2)/-75*2=30(1+√2)/-150=(1+√2)/-5≈-0,48
x₂=(30-30√2)/-75*2=30(1-√2)/-150=(1-√2)/-5≈0,08