Description:
Enter a string
                                   =-1^2
into any LibreOffice Calc cell. Then the formula is evaluated to "1",
however, the correct value should be -1.
In my opinion, -1^2 should be evaluated to -(1^2), but not to (-1)^2

Steps to Reproduce:
1. Enter a formula "=-1^2" in any LibreOffice Calc cell.
2. Press Enter.
3. Formula evaluates to "1" (i.e. it is understood as "(-1)^2").
4. The result should be -(1^2)=-1, not 1. 

Actual Results:
1

Expected Results:
-1


Reproducible: Always


User Profile Reset: No

Additional Info:
Version: 7.6.4.1 (x86) / LibreOffice Community
Build ID: e19e193f88cd6c0525a17fb7a176ed8e6a3e2aa1
CPU threads: 4; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win
Locale: pl-PL (pl_PL); UI: pl-PL
Calc: threaded