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math 9TH UNIT 6 Algebraic manipulation-1
1.
The meaning for the abbreviation HCF and LCM is?
a) Highest common factor and least common multiple
b) Highest common factor and least common multiplication
c) Highest common fragment and least common multiple
d) Highest common factor and least common factor
2.
If two or more algebraic expressions are given then their common factor of highest power is called?
a) LCM
b) HCF
c) None
d) Divider
3.
If an algebraic expression p(x) is exactly divisible by two or more expressions then p(x) is called?
a) LCM
b) Common multiple
c) Multiply
d) multiple
4.
We can find HCF by?
a) Both are false
b) Both are true
c) Factorization
d) Division
5.
LCM x HCF = ?
a) p(x) x q(x)
b) HCF
c) Both LCM and HCF
d) LCM
6.
We define a square root of a given expression p(x) as another expression q(x) as?
a) q(x) - q(x) = p(x)
b) None
c) q(x) q(x) = p(x)
d) q(x) q(x) = q
2
(x)
7.
The square root of the expression 4x
2
-12x+9 =?
a) (3x-2)
2
b) (2x-3)
c) (3x-2)
d) (2x-3)
2
8.
HCF of p
3
q - pq
3
and p
5
q
2
- pq
5
=?
a) p
2
q
2
(p-q)
b) pq(pq)
c) pq(p
3
-q
3
)
d) pq(p
2
- q
2
)
9.
HCF of 5x
2
y
2
and 20 x
3
y
3
is?
a) 20 x
3
y
3
b) 100x
5
y
5
c) 5xy
d) 5x
2
y
2
10.
HCF of a
2
-b
2
and a
3
-b
3
is?
a) a
2
-ab+b
2
b) (a+b)
c) (a
2
+ab+b
2
)
d) (a-b)
11.
LCM of 15x
2
, 45xy and 30xyz is?
a) 15x
2
yz
b) 90x
2
yz
c) 15xyz
d) 90xyz
12.
The square root of x
4
+1/x
4
+2=?
a) (x+1/x)
b) (x
2
+1/x
2
)
c) (x
2
-1/x
2
)
d) (x-1/x)
13.
What should be added to complete the square of x
4
+64?
a) 4x
2
b) 8x
2
c) -8x
2
d) 16x
2
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