Casio fx-CG10 PRIZM - Page 12

Getting Started with the fx-CG10
EQUATION
The equation
−2x
2
+ 40x = 150
was previously solved in the Graph menu. It can also be solved in the Equation menu
by transforming it to
-2x
2
+ 40x -150 = 0
.
Press pf(A). (It is not necessary to push a.) To solve polynomial equations, press w(POLY).
Press q(2) for a second degree polynomial.
Enter the 3 coefcients, pressing l after each one. Note, equations must be in standard form to solve. To solve,
press q(SOLVE). Both solutions are displayed. Note, when solutions are not rational, both a decimal and an exact
solution are displayed. The third screenshot displays the solutions to
−2x
2
+ 40x −160 = 0
.
12