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Grade 7 - Mathematics
4.51 Special Products and Expansions Review Test

Q 1: 25x2 - 40xy2 + .....
12y3
16y4
18y4
16y2

Q 2: Divide 6a4 by 3a3.
2a3
2a2
3a
2a

Q 3: Divide [(5a)3+(2b)3] by (5a+2b).
25a2+10ab+4b2
25a2-10ab+4b2
25a3-10ab+4b3

Q 4: (x-1)(3x-4) = 3x2-7x+___.
Answer:

Q 5: 16x2 - 81y2 = _____?
(4x+9y)(4x-9y)
(4x+9y)(4x+9y)
(4x-9y)(4x-9y)

Q 6: (3x-2y) (3x+2y) = _____?
9x2+4y2
9x2-4y2

Q 7: Divide [(3a)3+(5b)3] by (3a+5b).
9a2+15ab+25b2
9a2-15ab+25b2
9a3-15ab+25b3

Q 8: (7x+2)(2x+2) = 14x2+___+4.
Answer:

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Question 10: This question is available to subscribers only!


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