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Baekhyun4
@Baekhyun4
August 2022
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Добавить коэффициенты квадратного уравнения −2x+5x^2−1=0.
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2407Alexa
A=5
b=-2
c=-1
5x^2-2x-1=0
D=(-2)^2-4×5×(-1)=4+20=24
x1=(-(-2)-V24)/2×5=(2-2V6)/2×5=2×(1-V6)/2×5=(1-V6)/5
x2=(-(-2)+V24)/2×5=(2+2V6)/2×5=2×(1+V6)/2×5=(1+V6)/5
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Answers & Comments
b=-2
c=-1
5x^2-2x-1=0
D=(-2)^2-4×5×(-1)=4+20=24
x1=(-(-2)-V24)/2×5=(2-2V6)/2×5=2×(1-V6)/2×5=(1-V6)/5
x2=(-(-2)+V24)/2×5=(2+2V6)/2×5=2×(1+V6)/2×5=(1+V6)/5