babykk57
babykk57 babykk57
  • 21-10-2018
  • Mathematics
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gmany
gmany gmany
  • 21-10-2018

[tex]ax^2+bx+c=0\\\\x^2+7x+9=3\qquad|\text{subtract 3 from both sides}\\\\x^2+7x+9-3=3-3\\\\\boxed{x^2+7x+6=0\to A.}[/tex]

[tex]a=1,\ b=7,\ c=6[/tex]

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ajlee2003
ajlee2003 ajlee2003
  • 21-10-2018

The answer is A because you subtract 3 from both sides to get the equation set to 0


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