kotahlynn kotahlynn
  • 24-10-2019
  • Mathematics
contestada

m2-5m-14=0
quadratic formula​

Respuesta :

jdoe0001 jdoe0001
  • 24-10-2019

[tex]\bf m^2-5m-14=0 ~~~~~~~~~~~~\textit{quadratic formula} \\\\ \stackrel{\stackrel{a}{\downarrow }}{1}m^2\stackrel{\stackrel{b}{\downarrow }}{-5}m\stackrel{\stackrel{c}{\downarrow }}{-14}=0 \qquad \qquad x= \cfrac{ - b \pm \sqrt { b^2 -4 a c}}{2 a} \\\\\\ m= \cfrac{ - (-5) \pm \sqrt { (-5)^2 -4(1)(-14)}}{2(1)}\implies m=\cfrac{5\pm\sqrt{25+56}}{2} \\\\\\ m=\cfrac{5\pm\sqrt{81}}{2}\implies m=\cfrac{5\pm 9}{2}\implies m= \begin{cases} 7\\ -2 \end{cases}[/tex]

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zaylencollins55 zaylencollins55
  • 13-03-2021

Answer:

-2

Step-by-step explanation:

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