elijah6842 elijah6842
  • 02-12-2020
  • Mathematics
contestada

Solve the following quadratic by completing the square. (Hint: It won't factor) x2-10x+5=0

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cindo2793 cindo2793
  • 02-12-2020

[tex]5+2\sqrt{5} , 5-2\sqrt{5}[/tex]    Answer:   5±2[tex]\sqrt{5}[/tex]

Step-by-step explanation:

x2 -10x=5=0

x2-10x+25=-5+25

(x-5)(x-5)=20

[tex](x-5)^{2} =\sqrt{20}[/tex]

[tex]\sqrt{x-5}=\sqrt{20}[/tex]

x-5=±[tex]\sqrt{20[/tex]

x=5±[tex]\sqrt{5*4[/tex]

x=5±2[tex]\sqrt{5}[/tex]

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