電卓は、三次方程式の根を、解析解と近似解の両方の形で求めます。
Enter a cubic equation:
x^3-5x^2-3x+7=0
x^3+1=5x^2
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Your input: solve the cubic equation $$$x^{3} - 7 x^{2} + 7 x + 15 = 0$$$
Multiplicity: $$$1$$$, $$$x_{1}=5$$$
Multiplicity: $$$1$$$, $$$x_{2}=3$$$
Multiplicity: $$$1$$$, $$$x_{3}=-1$$$