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Byju's Answer
Standard XII
Mathematics
Addition and Subtraction of a Matrix
Tick the cor...
Question
Tick (✓) the correct answer:
(3q + 7p
2
− 2r
3
+ 4) − (4p
2
− 2q + 7r
3
− 3) = ?
(a) (p
2
+ 2q + 5r
3
+ 1)
(b) (11p
2
+ q + 5r
3
+ 1)
(c) (−3p
2
− 5q + 9r
3
− 7)
(d) (3p
2
+ 5q − 9r
3
+7)
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Solution
(d) (3p
2
+ 5q − 9r
3
+7)
7
p
2
+
3
q
-
2
r
3
+
4
4
p
2
-
2
q
+
7
r
3
-
3
-
+
-
+
3
p
2
+
5
q
-
9
r
3
+
7
¯
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