Texas Instruments BA-20 Quick Reference Guide - Page 6
Squares and Square Roots
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UPC - 033317032679
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For multiplication, pressing D repeats the operation and the number that precedes it. 3 Q 8 = ?; 3 Q 15 = ? ; 3 Q 30 = ? 3 B 8 D 24. 15 D 45. 30 D 90. Squares and Square Roots To square a number, enter the number and press B D. 2.52 = ? 2.5 B D 6.25 (1.6 x 2.5)2 = ? 1.6 B 2.5 B D 16. To find the square root of a number, enter the number and press A. 144 = ? 1 44 A 12. 162 + 33 = ? 16 B D @ 33 D A 17. Note: Attempting to find the square root of a negative number results in an error. 6-ENG
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For multiplication, pressing
D
repeats the operation and
the number that precedes it.
3
Q
8 = ?; 3
Q
15 = ? ; 3
Q
30 = ?
3
B
8
D
24.
15
D
45.
30
D
90.
Squares and Square Roots
To square a number, enter the number and press
B
D
.
2.5
2
= ?
2.5
B
D
6.25
(1.6 x 2.5)
2
= ?
1.6
B
2.5
B
D
16.
To find the square root of a number, enter the number and
press
A
.
144 = ?
1 44
A
12.
16
2
+ 33 = ?
16
B
D
@
33
D
A
17.
Note:
Attempting to find the square root of a negative
number results in an error.