Know the keys: 2nd, ALPHA and negative

01

Press these keys

2ndALPHA(−)−

02

Walkthrough

1
Read above a key
Press 2nd, then the key whose blue label you need.
2
Type a letter
Press ALPHA, then the key carrying that green letter.
3
Enter a negative
Use the dedicated (−) key beside ENTER; use − for subtraction between values.

03

Worked example

Enter −3² and compare it with (−3)².

NORMAL FLOAT AUTO REAL MP−3²-9(−3)²9

Answer−3² = −9, while (−3)² = 9.