ElianysM383408 ElianysM383408
  • 03-11-2022
  • Mathematics
contestada

Please help me with this I do not understand. I did the steps but am really looking for the answer if you could help.

Please help me with this I do not understand I did the steps but am really looking for the answer if you could help class=

Respuesta :

DavielH131551 DavielH131551
  • 03-11-2022

ANSWER :

The zeros are 1/2 and -5

EXPLANATION :

From the problem, we have the function :

[tex]f(x)=2x^2+9x-5[/tex]

The zeros of the function are the values of x when f(x) = 0

[tex]2x^2+9x-5=0[/tex]

Using quadratic formula with a = 2, b = 9 and c = -5

[tex]\begin{gathered} x=\frac{-b\pm\sqrt{b^2-4ac}}{2a} \\ \\ x=\frac{-9\pm\sqrt{9^2-4(2)(-5)}}{2(2)} \\ \\ x=\frac{-9\pm\sqrt{81+40}}{4} \\ \\ x=\frac{-9\pm\sqrt{121}}{4} \\ \\ x=\frac{-9\pm11}{4} \\ \\ x=\frac{-9+11}{4}=\frac{1}{2} \\ \\ x=\frac{-9-11}{4}=-5 \end{gathered}[/tex]

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