Sedrotoprans
Answered

x+y+z=9

2xy+2xz+2yz=46 olduğuna göre  x²+y²+z² kaçtır ? 

Sagot :

Beqorans

(x+y+z)^2=x^2+y^2+z^2+2(xy+zx+yz) buradan 81-46=35 cevap

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