Question

faça o grafico
1) X² - 4x + 3 = 0

me ajude por favor
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Answer 1

Resposta:

x² - 4x + 3 = 0

a = 1

b = -4

C = 3

delta = b² - 4 . a . c

delta = (-4)² - 4 . 1 . 3

delta = 16 - 12

delta = 4

$x = \frac{ - b \frac{ + }{ - } \sqrt{delta} }{2.a}$

$x = \frac{ - ( - 4) \frac{ + }{ - } \sqrt{4} }{2.1}$

$x = \frac{4 \frac{ + }{ - }2 }{2}$

$x¹=\frac{4 + 2}{2} = \frac{6}{2} = 3$

$x² =\frac{4 - 2}{2} = \frac{2}{2} = 2$

S={2, 3}