Нужно пожалуста посчитайте уравнения: x^2-5x+6=0y^2+8y+16=0X^2-x+8=02x^2-x=31/4x^2-x-3=0

X^2 - 5X + 6 = 0  

D = 25 - 24 = 1 ; √ D = 1  

X1 = ( 5 + 1 ) : 2 = 3  

X2 = ( 5 - 1 ) : 2 = 2  

3 и 2  

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X^2 - 7X + 10 = 0  

D = 49 - 40 = 9 ; √ D = 3  

X1 = ( 7 + 3 ) : 2 = 5  

X2 = ( 7 - 3 ) : 2 = 2  

5 и 2  

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Y^2 + 8Y + 16 = 0

D = 64 - 64 = 0  

Y = ( - 8 ) : 2 = ( - 4 )

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Y^2 - 10Y + 25 = 0  

D = 100 - 100 = 0  

Y = 10 : 2 = 5