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WorkShop Calculation and Science
ALGEBRA
Set 6
Set 6
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Q12618
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Which is expanded form of a<sup>3</sup>- b<sup>3</sup>?
A
(a+b) (a<sup>2</sup> - b<sup>2</sup>- ab)
B
(a-b) (a<sup>2</sup> + b<sup>2</sup> + ab)
C
(a-b) (a<sup>2</sup> - b<sup>2</sup> - ab)
D
(a-b) (a<sup>2</sup> - b<sup>2</sup>+ ab)
Q12619
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What is the value of (6<sup>3</sup>) / ((-3)<sup>3</sup>) ?
A
8
B
(-8)
C
27
D
(-27)
Q12620
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What is the value of x<sup>2</sup>-y<sup>2</sup> if (x+y) = 9, (x - y) = 4?
A
13
B
65
C
36
D
46
Q12621
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What is the value of 'X' if x - y = 6 and x + y = 8?
A
5
B
6
C
7
D
14
Q12622
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What is the value of a<sup>2</sup>+b<sup>2</sup> if a+b=9 and ab = 20?
A
121
B
(-121)
C
41
D
(-41)
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