展開の利用です。 x+y+z\u003d2、xy+yz+zx\u003d1のとき
y zx Discover cheap clothes, shoes and accessories for men at Our shop Outlet. Shop the latest menswear collection at cheap prices.
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Y-3 - Y-3 ZX RUN(BLACK Y-3/G54062 y zx
y zx
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アディダス Y-3 ZX Torsion - Ef2625 y zx
y zx
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If x+y+z\u003d9 and xy+yz+zx\u003d23, the value y zx