Respuesta :

lavencheong06

Step-by-step explanation:

from (2)

x-y=2

y=x-2 (3)

subs (3) into (1)

x²-2x+(x-2)=8

x²-2x+X-10=0

x²+x-10=0

quadratic formula

x= (-1±√1²-4×1×(-10))/2(1)

X=( -1±√41)/2

X=(-1+√41)/2

=

x=(-1-√41)/2

=

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