Kmoore1992 Kmoore1992
  • 28-04-2015
  • Mathematics
contestada

√7-x+5=x help please

Respuesta :

JaySL JaySL
  • 28-04-2015
x-5=[tex]\sqrt{7-x}[/tex]

Squaring and subtracting 7-x, we get:

[tex]x^2-9x+18=0[/tex]

Factoring, we have:

(x-6)(x-3)=0
So x can be 6 or 3.
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