If x + 1/x = 8, then the value of x2 + 1/x2 is
66
68
61
62
If a number plus two third of it self plus one half of itself plus one seventh equals 97, then the number is
40
48
42
46
-60x5 ÷ 5x2
-15x2
12x3
-12x7
-12x3
Factorize 5a ( 2x – 3y ) + 2b ( 2x – 3y):
(2x - 3y) (5a + 2b)
(2x + 3y) (5a - 2b)
(2x + 3y ) ( a + 2b )
None of these
If the factors of a2 + b2 + 2(ab + bc + ca) are (a + b + 3) and (a + b + nc), then the value of m + n is
0
2
4
6
The greatest common factor of 48 a2b2c2 and 84 a3 b3 c3 is
12 a2 b2 c2
4abc
4a2b2c2
4a2c2b
Simplify ( 4x2 – 9) ÷ ( 2x -3)
2x -3
2x + 3
x + 3
x - 3
Factorise 6 ab - b2 + 12 ac - 2 bc
( b + 2 c ) ( 6 a - b )
(b - 2c) ( 6a + b )
( b - 2b ) (6a + b )
The polynomial, x6 + 64y6 on factorisation gives
(x2 + 4y2) (x4 - 4y4)
(x2 + 4y2) (x4 - 4x2y2 + 16y4)
(x2 - 4y2) (x4 + 4y4)
(x2 + 4y2) (x4 + 4x2y2 + 16y4)
If (x + 1) is a factor of 2x3 - x2 - (2a -3)x + 2, then the value of 'a' is
3
3/2
1/2
