Unit-4:Algebra
(a) Basic concepts and operations
(b) Algebraic identities
(c) Linear equation(one variable)
Q1.
The degree of constant polynomial is _________ .
(a) 0 (b) 1 (c) 2 (d) 3
Answer.
(a) 0 .
Answer
Q2.
8x2y - 6y4 + 9x3 y4 is a polynomial of degree .
(a) 7 (b) 3 (c) 4 (d) 2
Answer.
(a) 7
Answer
Q3.
A polynomial of degree 3 is called ______ polynomial.
(a) Quadratic (b) Cubic (c) Linear (d) None of these
Answer.
(b) Cubic
Answer
Q4.
4x2 - 5 is a factor of 4x2 + 7x2 + 15 or not .
(a) yes (b) no (c) can't say
Answer.
(b) no
Answer
Q5.
In 4x2 + 20xy + _______ what must be added to make it a perfect square ?
(a) 16y (b) 10xy (c) 25y2 (d)1
Answer.
(c) 25y2
Answer
Q6.
Find the value of a2 + b2 if a + b = 10 and a - b = 4
(a) 16 (b) 52 (c) 10 (d) 58
Answer.
(d) 58
Answer
Q7.
Simplify
231 x 231 - 144 x 144
/
231 + 144
(a) 144 (b) 87 (c) 41 (d) 16
Answer.
(b) 87
Answer
Q8.
√
x
/
y
+ √
y
/
x
=
10
/
7
. Find xy
(a) 49 (b) 100 (c) 10 (d) 7
Answer.
(a) 49
Answer
Q9.
The denominator of a rational number is greater than its numerator by 8. If the numerator is increased by 16. and the denominator is
decreased by 2, the number obtained is 4/3 , find the rational number in simplest form.
(a) 3/4 (b) 1/2 (c) 2/3 (d)4/3
Answer.
(a) 3/4
Answer
Q10.
The length of the garden is 3/2 of its breath. If perimeter is 60. find its dimensional.
(a) (18,12) (b) (6,10) (c) (20,40)
(d) (9,4)
Answer.
(a) (18,12)
Answer
