Enter the Quadratic Function using your Memory Keys
For example: 0 = 2x2 + 5x – 6
Make sure you are in Normal mode by pressing 0.
We know that a = 2; b = 5 and c = -6. We need to store this in the calculator. So we press 2 . Now store b so type 5 . And put c in so type 6 .
Now type in the formula by pressing 4 2
Your first answer will be which is -3.07… when you press .
Now to get your second answer you need to press until your cursor is behind the minus sign. Press . Your second answer will now be which will be 0.57… when you press on your SHARP EL535.
If you have another question e.g. 4×2 + 3x – 9 simply re-store the new a, b and c values, press up until you reach the previous quadratic formula and press then the new answer will appear.