Question

2x2+2×+3=0 fórmula general

Answer 1

$x = - b \frac{ + }{ - } \sqrt{b {}^{2} } - 4(a)(c) \div 2(a)$
$a = 2 \\ b = 2 \\ c = 3$

$x = - 2 \frac{ + }{ - } \sqrt{2 {}^{2} } - 4(2)(3) \%2(2)$
$x = - 2 \frac{ + }{ - } \sqrt{4 - 24 } \%4$
$x = - 2 \frac{ + }{ - } \sqrt{20} \%4$
$x = - 2 \frac{ + }{ - } 4.4 \div 4$
$x 1 = - 2 + 4.4 \div 4 = 2.4 \div 4 = \\0.6$
$x2 = - 2 - 4.4 \div 4 = - 6.4 \div 4 = \\ -1.6$