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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: (9x-6)2 = _____?
81x2-108x+36
9x2-108x+36
81x2+108x+36

Q 2: 16(2x+3y+z) = _____?
Answer:

Q 3: (6a-7b)(6a+7b) = _____?
(12a)2-(6b)2
(a)2+(7b)2
(6a)2-(7b)2
6a2-7b2

Q 4: Divide [(3a)3 + (3b)3] by (3a+3b).
9a3-9ab+9b3
9a2+9ab+9b2
9a2-9ab+9b2

Q 5: If (x+1/x) = 25 find x2+1/x2.
630
623
625

Q 6: Find the square root of 729x8y10z2.
27x4y5z
27x3y8z
23x4y5z

Q 7: Factorise 81x2 - 90x + 25.
(9x+5)(9x-5)
(9x+5)(9x+5)
(9x-5)(9x-5)

Q 8: (15x+3)(4y-1) = _____?
60xy-15x+12y-3
60xy+15x+12y-3
60xy-15x-12y-3

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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