Page 840 - Algebra 1
P. 840
11. Find the difference of A - B.
Press
The difference is A - B = ⎢⎡ 7
.
⎣-3 Press 2 1 .
12. Find 2A.
So, 2A = ⎡⎢8 ⎣4
Lab Practice
L e t A = ⎡⎢ 3 2
⎣-1 4 0⎦
to find each value. a. A + B,
b. A - B c. 3B
d. B - A e. -2A
- 3 ⎤ . U s e a g r a p h i n g c a l c u l a t o r
-12⎤ . 6⎦
1
2
4 ⎤ a n d B = ⎡⎢ 2 8
⎣5 -9 2⎦
-13⎤ . 12⎦
Lab 11 825
