Question

Tolong dibantu ya
terimakasi

Answer 1

x+y=3 -> a+b=3          a+b=3

x+z=4 -> a+c=4          a+c=4 _

y+z=5 -> b+c=            b-c=-1             

b-c=-1              a+b=3

b+c=5  +          a+2=3

2b=4                a    =3-2

b=2                  a    =1

 

a+c=4

1+c=4

c     =3

 

a^2+b^2+c^2=

1^2+2^2+3^2=

1+4+9   =

14