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Grade 8 - Mathematics
7.51 Polynomials Review Test

Q 1: Divide [(5a)3-(6b)3] by (5a-6b).
25a2-30ab+36b2
25a3+30ab+36b3
25a3+30ab+36b2
25a2+30ab+36b2

Q 2: If x+y = 8, xy = 12, find the value of x2+y2.
44
40
46
42

Q 3: If a+b = 8 and ab = 15, find the value of a3+b3.
157
152
159
153

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

Q 5: Find the value of (58)2 using formula.
3384
3354
3364
3374

Q 6: Find the product of (2x+2y+2z) (4x2+4y2+4z2-4xy-4yz-4xz).
8x3+8y3+z3-24xyz
8x3+8y3+z3-12xyz
8x3+8y3-z3-24xyz
None of these

Q 7: If x-1/x = 10, find the value of x3-1/x3.
1060
1030
1050
1040

Q 8: (6x2+7x-7)(-5x) = _____?
-30x3+35x2+35x
30x3-35x2+35x
None of these
-30x3-35x2+35x

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