The coefficient of in the expansion of is ____.
14
21
28
35
/
– 7
7
14
– 14
If coefficients of term and term are equal in the expansion of then the value of r is ____.
14
15
13
16
/
/
n
Find the factors of quadratic equation x2 -9x +20 = 0?
(x+4)(x+5)
(x+4)(x-5)
(x-4)(x+5)
(x-4)(x-5)
(x+2)(x+10)
Two times of a natural number is subtracted from its square and the result is 35. Find the number.
5
7
9
6
8
Find all the roots of the equation 4x4 – 144x2 =0.
0,0,2,3
0,4,2,-3
0,0,6,-6
2,4,-3,6
3,-5,4,2
/
a=2
b=1,a=3
a=3
b=4
/
None of the above