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новичок618
@новичок618
July 2022
1
7
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помогите плиз 4 и 3 если можно
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Nataliek007
A²+a-20=0
a=-0,5+-√20,25 a1=-5 a2=4
x²-10x+28=(x²-10x+25)+3=(x-5)²+3>0 при любых х
1)
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новичок618
это 3?
Nataliek007
это и 3 и 4
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Answers & Comments
a=-0,5+-√20,25 a1=-5 a2=4
x²-10x+28=(x²-10x+25)+3=(x-5)²+3>0 при любых х
1)