When you took the batteries out, was there a white or greenish deposit around battery terminals, or battery leaks or swelling?
Most likely battery electrolyte has leaked into the electronics, eating through wires / parts, or the battery connector terminals / springs may just be corroded and need a toothbrush.
Best to open the back cover and inspect for corrosion / damage, cleaning where needed.
For cleaning dried electrolyte, it's best to remove the entire board, unplug display, soak in medium-hot water with dishwasher, or Coca-Cola, for 1 hour.
No, I don't work for Coke - just saw the tip once on You Tube. ;)
Gently scrub then rinse well with clean running water, allow to dry.
SOURCE: how to calculate log value in calculator with different base value
to calculate logb to base a,perform logb /loga
SOURCE: Inputing factors on a casio fx-115es calculator
Unless I am failing to understand your problem, just combine like terms to get:
9x^2+2x+4 and then enter those coefficients into the quadratic solver.
That will get you the two answers -- both of them will be complex.
If you wanted to turn those two answers into factors (complex) of the original equation simply
change the signs on each and put an x in front.
Of course, the quadratic formula would also work.
CG
SOURCE: Casio fx-9860g ............ how to do percent operation
Hello,
[OPTN][LIST] scroll right till you find %. Press the function first then the number. It gives you the percent.
Hope it helps.
SOURCE: Hi, I have a Casio calculator fx-991MS giving me wrong answers!
Hello,
I am only looking for a plausible cause of the error, because I do not believe your calculator can make such a mistake. I think you accidentally activated the Exponential display format and did not pay attention to the small, raised -03 that came at the end of the number displayed. It is a common mistake for those not very familiar with Scientific or exponential notation.
Let us try to reset your calculator to the normal (floating point) format.
Press the [MODE] key a number of times until you reach a screen that has FIX, SCI, NORM and under each one a number (FIX 1, SCI 2), Norm 3). To have the number of decimal place you gave in your result (4 decimal digits), you press 1 to select Fix then 4.
Be aware that scientific calculators usually stop displaying results in floating point format ( 0.0000045 ) if the number is smaller then 0.001. So basically, 0.00099 will be displayed as 9.90-04, -04 being raised above the level, and in smaller size.
Hope it helps.
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