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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 7 - Mathematics
4.51 Special Products and Expansions Review Test

Q 1: If (x+1/x) = 25 find x2+1/x2.
625
630
623

Q 2: (x-5).(x+2) = _____?
5x2-3x-10
x2-3x-10
x2-3x+10

Q 3: (4x+3)(6x-3) = 24x2+___-9.
Answer:

Q 4: If x=5, then 7x2+3x+2 = 157
False
True

Q 5: Factorise 9x2 + 24x + 16.
(3x-4)(3x+4)
(3x+4)(3x+4)
(3x-4)(3x-4)

Q 6: (6a-7b)(6a+7b) = _____?
(a)2+(7b)2
(6a)2-(7b)2
(12a)2-(6b)2
6a2-7b2

Q 7: Express 42x+18y as product of factors.
3(7x+6y)
7(6x+3y)
6(7x+3y)

Q 8: Find the square root of 1936x2y4.
42xy4
48xy2
44xy2

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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