If a + b = 8 and ab = 12 then a2 + b2 is
42
44
40
48
A polynomial of degree 1 is called a
Linear polynomial
Quadratic polynomial
Cubic polynomial
None of these
(-3 x2) + (6 x2) + (-x2) + 4 x2 =
6 x2
14 x2
-6 x2
7 x2
If 4 p2 + q2 = 40 and pq = 6 find 2 p + q.
± 4
± 8
± 6
± 2
If 3 x + 2 y = 12, xy = 6 then the value of 9 x2 + 4 y2
- 72
72
- 74
- 76
1022 =
204
10404
10400
102
If x2 + 1/x2 = 27, find the value of x - 1/x
5
29
√29
57
The degree of 5 x7 - 4 x3 + 2 x2 is
12
7
6
(x + 3) (x2 - 3 x + 9)
x3 + 27
x3 – 27
x3 - 9 x + 27
x3 + 81
(3 x - y) (9 x2 + 3 xy + y2)=
9 x2 + y2
27 x3 - y3
27 x3 + y3
x2 - y2
