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Erika11
@Erika11
July 2022
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Помогите пожалуйста решить квадратное уравнение 7x^2+9х+2=0
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jddt
D=b^2-4aC
D=9^2-4*7*2
D=25
x1=(-9+5)/14=-4/14=-2/7
x2=(-9-5)/14=-1
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Answers & Comments
D=9^2-4*7*2
D=25
x1=(-9+5)/14=-4/14=-2/7
x2=(-9-5)/14=-1