Предмет: Алгебра, автор: boddka9

x²=10-3x
помогите пожалуйста с решением

Ответы

Автор ответа: danilovnikitun
1

Ответ:

-5  2

Объяснение:

X^2+3x-10=0

По Виту:

X1= -5

X2= 2

Автор ответа: sunnatxoja77
2

x^2=10-3x\\x^2+3x-10=0\\D=b^2-4ac=9-4*1*(-10)=9+40=49=7^2\\x_{1,2}=\frac{-b\pm \sqrt{D} }{2a} \\\\x_1=\frac{-3-7}{2}=-5\\x_2=\frac{-3+7}{2}=2

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