Casio fx-9750G Equation Calculations - Manual (Page 6)

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7-3 Quadratic and Cubic Equations
This calculator can also solve quadratic and cubic equations that match the following
formats (when
a G G G G G 0):
• Quadratic: ax 2 + bx + c = 0
• Cubic: ax 3 + bx 2 + cx + d = 0
k k k k k Entering the Quadratic/Cubic Equation Mode
While in the Equation Mode, press 2 (POLY).
2 (POLY)
1 (2) ............. Quadratic equation
2 (3) ............. Cubic equation
k k k k k Solving a Quadratic or Cubic Equation
Example To solve the following cubic equation:
x 3 – 2 x 2 – x + 2 = 0
Press 2 (3) to enter the Cubic Equation Mode.
2 (3)
Input each coefficient.
bw-cw
-bwcw
1 2 3 4 5 6
1 2 3 4 5 6
Value being input into highlighted cell
Cell for input of coefficients