Casio fx-CG50 Getting Started page 10

Equations [Option A]
Simultaneous linear equations
The equation has to be entered in the form
similarly for more unknowns. Don't forget to rearrange your equation if it is not in this form.
Feature Useful for...
Find the solutions of the
equations.
Hint: If the lines (2 unknowns) or
planes (3 unknowns) are parallel,
the calculator will show 'No
Solution'. If the lines or planes
are coincident (lie on each other)
it will show 'Infinite Solutions').
Polynomial equations
The equations must be in the form
Remember to rearrange your equation if necessary.
Feature Useful for...
Find the solutions of the
equations.
Hint 1: If the equation does not
have one of the terms, enter 0
for the coefficient e.g. for

3
x 2 x
Hint 2: If the display shows 'No
Real Solutions' or a solution such
 i
, see below.
3 2
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ax by c
  
2
ax bx c
 
4 0 enter
 
(2 unknowns) or
Steps / key presses
From the EQUATION
menu, press q to
choose the menu,
then choose the number
of unknowns.
Press q
0 for quadratics and
Steps / key presses
From the EQUATION
menu press w to
choose the
then the degree (e.g. 2
for quadratics, 3 for
cubics).
Enter the coefficients of
your equations.
Press q
  
(3 unknowns), and
ax by cz d
Screen
Notice that the exact value is given
on the bottom right
   
3 2
ax bx cx d
Screen
menu
Notice that the exact value is given
on the bottom right
0 for cubics.