Queen Mary's School, Northend€¦ · If x + y + z= 9 and xy + yz + zx =23, find the values...
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Queen Mary's School, Northend€¦ · If x + y + z= 9 and xy + yz + zx =23, find the values ofx3 +y3 + z3 — 3xyz. A point lies on the x-axis at a distance of 7 units from the y-axis
