Im not new to the forum but been a while since I posted. I have a sheet that is pre-populated with cell formulas. in a different cell i would like to evaluate whether BOTH cells do NOT have formulas. in trying to combine into an IF(AND(NOT(ISFORMULA() it returns an error. any ideas on how to accomplish this? Here is the formula i've tried

Cell A1 = Hardcoded number

Cell A2 = Hardcoded number

Formula in cell A3

= IF(AND(NOT(ISFORMULA(A1,A2)),A1+A2),0)

So stuck on this one. Thanks