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nataxa71
@nataxa71
July 2022
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разложить квадратный трехчлен на множители
1) 4y^2-7y+1
2) x^2-x-1
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Answers & Comments
ЕкарныйБабай
1) 4y^2-7y+1=4(y-(7+
√33)/8)(y-(7-√33)/8)
D=49-16=33
y12=(7+-
√33)/8
2) x^2-x-1=(x-(1+
√5)/2)(x-(1-√5)/2)
D=1+4=5
x12=(1+-
√5)/2
2 votes
Thanks 2
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Answers & Comments
D=49-16=33
y12=(7+-√33)/8
2) x^2-x-1=(x-(1+√5)/2)(x-(1-√5)/2)
D=1+4=5
x12=(1+-√5)/2