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Grade 7 - Mathematics
4.51 Special Products and Expansions Review Test
Q 1
: a(a+b) = ab + ac, is this statement is true for any pair of real numbers?
True
False
Q 2
: Factorize 3xz + 2y - yz - 6x.
(3x-y)(x-2)
(3x+y)(x-2)
(3x-y)(x+2)
Q 3
: Find the value of (26)
^{2}
using formula.
678
674
676
Q 4
: (6x
^{2}
+7x-7)(-5x) = _____?
30x
^{3}
-35x
^{2}
+35x
-30x
^{3}
-35x
^{2}
+35x
30x
^{3}
-25x
^{2}
+25x
11x
^{3}
-15x
^{2}
+15x
Q 5
: Divide (6x
^{3}
-22x+9) by (2x+4).
Quotient=(3x
^{2}
-6x+1) and Remainder=5
Quotient=(3x
^{2}
-6x+1) and Remainder=0
Quotient=(3x
^{2}
-6x+1) and Remainder=15
None of these
Q 6
: Express 14x+18y as product of factors.
7(2a+9y)
9(2x+7y)
2(7x+9y)
Q 7
: 9a
^{2}
- (3a+4b)
^{2}
= _____?
-4b(6a+4b)
-4b(6a-4b)
4b(6a+4b)
Q 8
: Divide [(7a)
^{3}
-(6b)
^{3}
] by (7a-6b).
49a
^{2}
-42ab+36b
^{2}
49a
^{2}
+42ab+36b
^{2}
49a
^{3}
+42ab+36b
^{3}
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