fx-82MS fx-82TL fx-9860GII TI-83
x2
On a Casio calculator you can compute a square
x²
or via the CATALOG as
CATALOG P
INPUT SHIFT 4 ² F1
Example 1
To calculate 32 = 9
32 32 3 x² EXE 9
and you get the same result with
32 3 ∧ 2 EXE 9
3 × 3 EXE 3×3 9
Example 2
To calculate (−4)2 = 16 where parentheses are needed
(-4)2 ( (–) 4 ) x² EXE 16
Take care, because -42 = -16
-42 (–) 4 x² EXE -16
Example 3
To calculate 02 = 0
02 0 x² EXE 0
Example 4
To calculate sin2 (¾π) = 0.5 in radians
π (sin .75π)2 ( sin · 7 5 SHIFT EXP ) x² EXE F↔D 0.5
Example 5
To calculate 32 + 42 = 25
32+42 3 x² + 4 x² EXE 25
and continue with √25 = 5
√ Ans SHIFT x² SHIFT (–) EXE √Ans 5