becca7437 becca7437
  • 23-10-2019
  • Mathematics
contestada

find one solution for the following

find one solution for the following class=

Respuesta :

IuliusCaesar
IuliusCaesar IuliusCaesar
  • 25-10-2019

-7x²-2x+3=0

7x²+2x-3=0

Δ=b²-4ac=2²-(4*-3*7)=4+84=88

x₁,₂= [tex]\frac{-b(+/-)\sqrt{88} }{2a}[/tex] = [tex]\frac{-2(+/-)2\sqrt{22} }{14}[/tex]=

[tex]\frac{-2+2\sqrt{22} }{14}[/tex] ∨ [tex]\frac{-2-2\sqrt{22} }{14}[/tex] =

[tex]\frac{2(-1+1\sqrt{22}) }{14}[/tex] ∨ [tex]\frac{2(-1-1\sqrt{22}) }{14}[/tex]

Result = [tex]\frac{(-1+1\sqrt{22}) }{7}[/tex] ∨ [tex]\frac{(-1-1\sqrt{22}) }{7}[/tex]

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