Casio fx-570MS - Manual (Page 18)

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Example 1 Example 1 Solve the equation 2 x 2 – 5 x + 2 = 0.
*The following shows operation using the fx-100MS/115MS/570MS/
991MS.
1 .
Select the EQN Mode and then specify the degree of the equation.
In this example we want to solve a quadratic equation,
so you would specify 2.
F F F 1
r
(Degree?) 2
2 .
Input values for a , b , and c in the quadratic equation ax 2 + bx + c = 0.
(a?) 2 =
(b?) D 5 =
(c?) 2 =
3 .
One of the solutions obtained appears on the display.
4 .
Display the next solution.
]
The above produces the solutions x = 2 and x = 0.5.
Operation
2 1
1
2
2
1
y
x
Solving Quadratic Equations
and Cubic Equations
(fx-95MS/fx-100MS/fx-115MS/fx-570MS/fx-991MS only)