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Math 9 Chapter 4
Algebraic Expressions and Algebraic Formulas-3
1.
a
3
+b
3
=?
a) (a+b)(a
2
-ab+b
2
)
b) (a+b)(a
2
-ab-b
2
)
c) (a-b)(a
2
-ab+b
2
)
d) (a-b)(a
2
-ab+b
2
)
2.
a
3
-b
3
=?
a) (a-b)(a
2
+ab+b
2
)
b) (a+b)(a
2
+ab+b
2
)
c) (a+b)(av-ab+b
2
)
d) (a-b)(a
2
-ab+b
2
)
3.
An irrational radical with rational radical is called?
a) None
b) Polynomial
c) Complex
d) Surd
4.
Every surd is?
a) Binary
b) Irrational
c) Rational
d) Complex
5.
A surd which contains a single term is called?
a) One surd
b) Single surd
c) Monomial surd
d) Bionomical surd
6.
A surd which contains sum of two monomial surd is called?
a) Bionomical surd
b) Binary surd
c) Dual surd
d) Monomial surd
7.
If product of two surds is a rational number then each surd is called …… factor of other?
a) Decimal
b) Irrational
c) Rationalizing
d) Conjugate
8.
Two binomial surds of second order differing only in sign connecting their terms are called?
a) None
b) Rationalizing surds
c) Conjugate surds
d) Decimal surds
9.
The conjugate of x+ square root y is?
a) 1/ x+ square root y
b) 1/ x- square root y
c) x+ square root y
d) x - square root y
10.
Square root of 14 x square root of 35 =?
a) 10 square root 7
b) 2 square root 10
c) 7 square root 10
d) 5 square root 10
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