latoriaandrews1217 latoriaandrews1217
  • 03-03-2020
  • Mathematics
contestada

Wat does f(x)=x^2+x-30 solve to?

Respuesta :

Jenniferchinenye97 Jenniferchinenye97
  • 03-03-2020

Answer:

F(X) = 5 or -6

Step-by-step explanation:

F(X)  = [tex]x^{2} +x-30[/tex]

Using the Formula

[tex]-b[/tex]±[tex]\frac{\sqrt{b^{2} -4ac } }{2a}[/tex]

Where a = coefficient of [tex]x^{2}[/tex] i. e 1

b = coefficient of [tex]x[/tex] i. e 1

And c = 30

imputing the values, we have

[tex]-1[/tex] ± [tex]\frac{\sqrt{1^{2} - 4 X 1 X 30} }{2 X 1}[/tex]

[tex]-1[/tex] ± [tex]\frac{\sqrt{121} }{2}[/tex]

[tex]-1+\frac{11}{2}[/tex] OR [tex]-1-\frac{11}{2}[/tex]

Therefore, F(X) is either 5 or -6

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