Question

como reslver raiz de 2 grau completa??   $5x²3x-2=0$

Answer 1

$<var>5x^2 - 3x - 2 = 0</var>$

 

$<var>\Delta = b^2 - 4(a)(c)</var>$

 

$<var>\Delta = 3^2 - 4(5)(-2)</var>$

 

$<var>\Delta = 9 + 40</var>$

 

$<var>\Delta = 49</var>$

 

$<var>x =\frac{3 +_o_u_-\ 7}{10} </var>$

 

$<var>x^1 = 1</var>$

 

$<var>x^2 = -\frac{2}{5}</var>$

 

$<var>\boxed{S(1, -\frac{2}{5})}</var>$