Use the quadratic formula, or factor the quadratic polynomial. Once factored into a product of two first degree binomials, the roots are obtained by setting (in TURN) each binomial factor equal to zero.
SOURCE: want to solve quadratic equations on my casio 3650p super fx
Hello,
In your manual, Appendix Program Library, (Page A1) you have the listing of the problem to solve the quadratic equation. Type it in your calculator and execute it.
Hope it helps.
SOURCE: Problem with casio calculator, model 9850g plus
The Solve( command can be accessed in RUN mode by pressing the OPTN button.
In the screen that is then displayed are TABS (at the bottom).
Press [F4:CALC] then [F1:Solve]
The command echoes on the screen, ready to be completed and executed.
SOURCE: how do i enter the equation 5x-3=11+12x
The variables you have at your disposal in this calculator are
A, B,C,D,X,Y,M. All of them are accessed by pressing the [ALPHA] key before the key near which is written the name of the variable. You will notice that the markings of the symbols accessed with the [ALPHA] key are of the same color as that of the [ALPHA] key.
You will notice also that there are two = signs.
The one at the bottom right executes the command line. By pressing it you find the result of the expression just entered.
The other = sign is marked on the body of the calculator with the same color as the [ALPHA] key. It is located at the top left of the keyboard (excluding the row with SHIFT, MODE, the navigation buttons)
Example to enter X^2-2X-35=0 (not your expression)
Direct access physical keys are in [ ],
[ALPHA] (X) [X to power 2] [ - ] [2] [ * ][ALPHA][(X) [ - ] [3][5] [ALPHA] (=) [0]
Usually when you enter such an expression it is with the intention of solving it for X. By default X is taken to be the UNKNOWN. You will be prompted to enter the value assigned to any other letter symbol (Y, A,B,C,D).
So, if you want to use the Solve function, you press [SHIFT] [CALC] and the calculator will ask you a question: "Solve for X?" , and you press the = sign at the bottom right.
Then you will be prompted for any other non-X letter.
SOURCE: How to solve quadratic equations on fx82ms calculator
You can do it the same way people did it before calculators were invented. Just use the quadratic formula: http://en.wikipedia.org/wiki/Quadratic_formula. Some sophisticated calculators have generalized equation solvers that can handle equations much more complicated than the quadratic, but the fx-82 isn't one of them.
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