Math, asked by gachagirls475, 5 hours ago

X+y+z =7 , x^2+y^2+z^2=9
(Xy +yz +zx)=?

Answers

Answered by pjpramod99

1

Step-by-step explanation:

(x+y+z)^2=x^2+y^2+z^2+2(xy+yz+zx)

by using above identity we can solve

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