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+6*2-4x-5x-2-2
6*2=12
-4x-5x=+20x
-2-2=+4
12-20=8
8+4=12x
Distribuyó el signo
(6*2+4x+5)x(4)=0
(12+4x+5)x(4)=0
(4x+5)x(4)=-12
(4x+5)x=-12/4
(4x+5)=-12/4x
4x=-12-5/4x
X=-17/16x
X''=17/16
:x=:17/16
" = al cuadrado
: = raíz