18-07-2016
Mathematics

contestada

what are the zeros of the equation X2 - 12x + 11 equals 0
a. x=1 or x=11
b. x=5 or x=6
c. x=3 or x=8
d. x=2 or x=10

Respuesta :

saisravanisure saisravanisure

18-07-2016

The answer is a. x=1 or x=11. Hope this helped.

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dalendrk dalendrk

18-07-2016

[tex]x^2-12x+11=0\\x^2-x-11x+11=0\\x(x-1)-11(x-1)=0\\(x-1)(x-11)=0\iff x-1=0\ or\ x-11=0\\\\\boxed{x=1\ or\ x=11}\to\fbox{a.}[/tex]

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