jordannicolebuoxn7x0 jordannicolebuoxn7x0
  • 11-10-2017
  • Mathematics
contestada

4x=x^2+6x+9, what do I do next? Subtract 4x?

Respuesta :

nathan127
nathan127 nathan127
  • 11-10-2017
Yes. Subtract 4x by both sides.

So:
4x = x^2 + 6x + 9
0 = x^2 + 2x + 9
Then you can factorize 
0 = (x+1)^2 + 8

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dobbromira
dobbromira dobbromira
  • 11-10-2017
-x^2- 6x+ 4x -9=0
-x^2 - 2x -9=0
D= b^2 - 4ac= 4- 4*1*9= 4- 36= -32-> no solution
Answer Link

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