Question

Usando a fórmula de bhaskara determine as raizes da equação
X2 -2x-35=0

Answer 1

Resposta:

Explicação passo a passo:

Δ=$b^{2}-4(a)(c)$

  $(-2)^{2}-4(1)(-35) \\= 4+140 \\= 144$

$x1= \frac{-(-2)+\sqrt{144} }{2*1}\\\\x1= \frac{2+12}{2}\\\\ x1=\frac{14}{2}\\\\ x1 = 7$

$x2 = \frac{-(-2)-\sqrt{144} }{2*1}\\\\x2= \frac{2-12}{2}\\\\x2 = \frac{-10}{2}\\\\x2=-5$