4u² - 4u + 1
a = 4 ; b = - 4 ; c = 1
D=b²- 4ac = (-4)² - 4 × 4 × 1 = 16 - 16 =0
D=0 ; 1 корень
x² + 4x + 4 =0
a = 1; b = 4 ; c = 4
D=b²- 4ac = 4² - 4 × 1 × 4= 16 - 16 =0
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4u² - 4u + 1
a = 4 ; b = - 4 ; c = 1
D=b²- 4ac = (-4)² - 4 × 4 × 1 = 16 - 16 =0
D=0 ; 1 корень
x² + 4x + 4 =0
a = 1; b = 4 ; c = 4
D=b²- 4ac = 4² - 4 × 1 × 4= 16 - 16 =0
D=0 ; 1 корень