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(3/5 x^3)の3乗は負125分の27乗Xの9乗に等しい。
x³=-1/27項目を移動し、xを得る³+1/27=0はxです³+(1/3)³=0立方と公式によると、得(x+⅓)(x²-⅓x+1/9)=0∴x+⅓=0またはx²-_;x+1/9=0∵x²-⅓x+1/9=(x-1/6)²+1/12>0で∴x=-&…
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