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Information regarding recent vulnerabilities

HP is aware of the recent vulnerabilities commonly referred to as "Spectre" and "Meltdown". HP has published a security bulletin with patches for these issues and a list of impacted systems. We will continue to update the bulletin as more information becomes available and encourage customers to check the bulletin frequently.

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## HP 50g Calculator - Negative Result when Squaring a Negative Number in Algebraic Mode

Issue
The calculator displays an answer with the incorrect sign when squaring a negative number in Algebraic mode.
SOLUTION
The calculator performs operations in a specific order, in which exponential expressions are evaluated before addition or subtraction. Thus, the squaring is done before the sign change.
If the term is enclosed in parentheses, then squared, the answer will be correct.
##### note:
Use parentheses to override the order of operation.
Correct Sequence
Here is the correct sequence for calculating the square of a negative number in Algebraic mode, say -3, using parentheses:
1. Press .
2. Press .
3. Press . The result is positive nine.
The square function of the keys in Algebraic mode can also be used:
1. Press .
2. Press .
In RPN mode:
1. Press .
2. Press .
Parentheses is not required to set the order of operation in RPN mode.
Specifying the Order of Operation in RPN and Algebraic Modes
In Algebraic mode, if the expression has more than one operation, use parentheses to set the order of operation. For example, calculate: (3+4) X (5+6):
1. Press .
2. Press . The result is 77.
In RPN mode:
There is no need for parentheses to set the order of operation in RPN. Simply enter the numbers on the stack, followed by the operations inside the parentheses first to obtain the same result:
1. Press .
2. Press .

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