what is x squared plus six x minus twenty seven =0

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02-09-2017
Mathematics

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what is x squared plus six x minus twenty seven =0

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WojtekR WojtekR · Answer 1 · 2017-09-02T03:34:31+02:00

WojtekR WojtekR

02-09-2017

[tex]x^2+6x-27=0\\\\x^2-3x+9x-27=0\\\\x\big(x-3\big)+9\big(x-3\big)=0\\\\\big(x+9\big)\big(x-3\big)=0\\\\\\x+9=0\qquad\vee\qquad x-3=0\\\\\boxed{x=-9\qquad\vee\qquad x=3}[/tex]

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