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MATHEMATICS
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Expansions · ICSE STD 9 (ICSE - English Medium). 8 questions.
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8 questions · timed · auto-graded
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Question 1
1 Mark
$9 a^2-24 a b+..........$ $\qquad$
Answer
$16 b^2$
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Question 2
1 Mark
$4 a^2+20 a b+..........$ $\qquad$
Answer
$25 b^2$
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Question 3
1 Mark
$25 a^2+16 b^2-..........$ $\qquad$
Answer
$40 a b$
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Question 4
1 Mark
$16 a^2+9 b^2+..........$ $\qquad$
Answer
$24 a b$
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Question 5
1 Mark
9a
2
- 24ab + .............
Answer
$16 b^2$
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Question 6
1 Mark
4a
2
+ 20ab + .............
Answer
$25 b^2$
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Question 7
1 Mark
25a
2
+16b
2
- .............
Answer
40ab
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Question 8
1 Mark
16a
2
+9b
2
+ .............
Answer
24ab
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Fill in the blanks. - MATHEMATICS STD 9 Questions - Vidyadip