Find equation of plane passing through (1,0,0),(0,1,0),(0,0,1) is....
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ax+by+cz=d a=d
b=d
ax+ay+cz=d
a+a=
a
2
+a
2
+c
2
1+1
2
1
2
2
a=
a
2
+a
2
+c
2
×
2
4a
2
=2a
2
+c
2
ax+ay±
2
a=9
2a
2
=c
2
x+y±
2
z=1
2
a=c
c=
2
a
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