{l}{y=x^3-3x^2-7x+1}{text{garis}}{x+2y-5=0text{adalah...}} を解きます| Microsoft 数学ソルバー

$$\left. \begin{array} { l } { y = x ^ { 3 } - 3 x ^ { 2 } - 7 x + 1 } \\ { \text { garis } } \\ { x + 2 y - 5 = 0 \text { adalah... } } \end{array} \right.$$

x を解く (複素数の解)

$$x=-\frac{\sqrt[3]{2}\times 3^{\frac{2}{3}}\left(1+\sqrt{3}i\right)\left(\sqrt{3\left(27y^{2}+432y-2272\right)}+9y+72\right)^{-\frac{1}{3}}\left(\sqrt[3]{18\left(\sqrt{3\left(27y^{2}+432y-2272\right)}+9y+72\right)}\left(-\left(1+\sqrt{3}i\right)\sqrt[3]{\sqrt{3\left(27y^{2}+432y-2272\right)}+9y+72}+\sqrt[3]{2}\times 3^{\frac{2}{3}}\left(-1+\sqrt{3}i\right)\right)+120\right)}{72}$$

$$x=\frac{6^{\frac{2}{3}}\left(\sqrt{3\left(27y^{2}+432y-2272\right)}+9y+72\right)^{-\frac{1}{3}}\left(\left(3\left(\sqrt{3\left(27y^{2}+432y-2272\right)}+9y+72\right)\right)^{\frac{2}{3}}+3\sqrt[3]{6\left(\sqrt{3\left(27y^{2}+432y-2272\right)}+9y+72\right)}+30\times 2^{\frac{2}{3}}\right)}{18}$$

$$x=-\frac{\sqrt[3]{2}\times 3^{\frac{2}{3}}\left(-\sqrt{3}i+1\right)\left(\sqrt{3\left(27y^{2}+432y-2272\right)}+9y+72\right)^{-\frac{1}{3}}\left(-\sqrt[3]{18\left(\sqrt{3\left(27y^{2}+432y-2272\right)}+9y+72\right)}\left(\left(-\sqrt{3}i+1\right)\sqrt[3]{\sqrt{3\left(27y^{2}+432y-2272\right)}+9y+72}+\sqrt[3]{2}\times 3^{\frac{2}{3}}\left(1+\sqrt{3}i\right)\right)+120\right)}{72}$$