Question

if x+y+z=4 and x2+y2+z2=10, find the value of xy+yz+zx​

Answer 1

Answer:

(x+y+z)²=x²+y²+z²+2xy+2yz+2zx

4²=10+2(xy+yz+xz)

16-10/2=xy+yz+xz

xy+yz+xz=3

Step-by-step explanation:

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Answer 2

Answer:

Answer

Step-by-step explanation:

Answer =3

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