Casio fx-9860GII - 1.12 Polar form

Press dto return to the previous screen, press q(REPT) to edit this problem or
continue solving simultaneous equations with three unknowns. To edit just one of the
numbers in the system, arrow to the number and press
r(EDIT) or highlight the number
to be edited and input the new number and press
l.
Press
duntil the Equation Editor screen is displayed. The second mode is Polynomial
w and can be used to solve second to sixth degree polynomial equations (in standard
form).
2. To solve the equation x
3
– 2x
2
– x + 2 = 0, input the following from the Equation
Editor screen:
 ww1ln2ln1l2lq
3.
To change the equation to x
3
+ 2x
2
+ 3x + 2 = 0, select q(REPT) and change the b-
value to 2, the c-value to 3 and press
q(SOLV).
4.
The default setting is for real numbers, to change the display to a+bi form, press
Lp for the Polynomial Set-Up menu, select w(a+bi), d, and then
q(SOLV).
Casio “The Basics fx-9860GII”
12