HP 10s User Manual page 35

@x,+
@O+,-
@ In an expression where two components have the same
priority, the calculation is performed from right to left.
é* ind 120 + e* Ue ( a7 120)
@ Other calculations will be carried out from left to right.
@ Calculations in parentheses are performed first.
@ If the calculation includes a parameter with a
negative number, the negative number should be in
parentheses. Since a minus sign (—) is considered
a B-type function, care is needed when negative
numbers are included in A-type functions,
mathematical powers or root operations.
Example: (-3) *= 81
—3* =-8]1
m Stack
This "stack" is an area of memory used to temporarily
save values (the number stack) and the order of
operations (the operator stack) during the calculation.
The number stack has a maximum capacity of 10
while the operator stack has a maximum capacity of
24. If a calculation exceeds the stack capacity, a
Stack ERROR will occur.
@ Example:
2x((3+4x(54+6)+7)+8)4+9=