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Grade 8 - Mathematics
7.51 Polynomials Review Test

Q 1: (6a-7b)(6a+7b) = _____?
None of these
(6a)2-(7b)2
(6a)2+(7b)2

Q 2: If a+b = 8 and ab = 15, find the value of a3+b3.
157
153
152
159

Q 3: If x-1/x = 10, find the value of x3-1/x3.
1050
1040
1060
1030

Q 4: If x + 1/x = 5, find the value of x2+1/x2 and x4+1/x4.
537
527
567
547

Q 5: Divide (a4+a3+6a2+9a+7) by (a2+a+2).
Quotient=(a2+4) and Remainder=(5a-1)
Quotient=(a2+4) and Remainder=(5a+1)
None of these
Quotient=(a2-4) and Remainder=(5a-1)

Q 6: Divide (8a2b - 16ab2 + 36ab) by 4ab.
2a + 4b - 9
2a - 4ab - 9
2a - 4b + 9
2a - 4b - 9

Q 7: Find the product (7x+2y)(7x-2y).
None of these
49x2-2y2
49x2+4y2
49x2-4y2

Q 8: Find the product of (x-3)(x-5)(x+7).
x3-x2-41x+105
None of these
x3-x2-41x+105
x3-x2-41x+105

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Question 10: This question is available to subscribers only!


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