x+y+z=15
xy+yz+zx=72
x^{2} + y^{2} + z^{2} =81
then the value of x =?
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Step-by-step explanation:
x+y+z=15
xy+yz+zx=72
x^{2} + y^{2} + z^{2} =81
then the value of x =?
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