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Byju's Answer
Standard VII
Mathematics
Solution of a Simple Linear Equation
If x=1, y=2 a...
Question
If x = 1, y = 2 and z = 3, find the value of x
2
+ y
2
+ 2xyz.
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Solution
Given:
x =1
y = 2
z = 3
Substituting x = 1, y = 2 and z = 3 in the given equation (x
2
+ y
2
+ 2xyz):
1
2
+
2
2
+
2
1
2
3
⇒
1
+
4
+
12
=
17
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