if x+y+z=10 and x^2+y^2+z^2=40 find xy+yz+zx
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Answered by
1
Probably 30.
You can extract the answer by using the identity
(x+y+z)^2=x^2+y^2+z^2+2xy+2yz+2zx
You can extract the answer by using the identity
(x+y+z)^2=x^2+y^2+z^2+2xy+2yz+2zx
Answered by
0
Answer:
Step-by-step explanation:
30 is the answer of this question
Hope my answer is correct
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