2X^2 - X = Y
2X - 1 = Y
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2X^2 - X = 2X - 1
2X^2 - X - 2X + 1 = 0
2X^2 - 3X + 1 = 0
D = 9 - 8 = 1 ; √ D = 1
X1 = ( 3 + 1 ) : 4 = 1
X2 = ( 3 - 1 ) : 4 = 0,5
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Y = 2X - 1
Y1 = 2 - 1 = 1
Y2 = 1 - 1 = 0
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ОТВЕТ ( 1 ; 1 ) ; ( 0,5 ; 0 )