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
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)
Factorise 4x2 + 9y2 – 4z2 – 12 xy
( 2x – 3y + 2z) (2x -3y – 2z)
(2x + 3y – 2z) ( 2x + 3y + 22)
(2x – 3y – 2z) ( 2x – 3y + 2z)
(2x + 3y + 2z) ( 2x – 3y -2z)
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 value of x2 + 1/x2 when x - 1/x = 7 is
51
50
53
55
Factorize 21a2bc + 28ab2c + 35abc2
7a2bc(3a + 4b + 5c)
3ab2c(3a + 46 + 5c)
7abc(3a + 4b + 5c)
7ab2c(3a + 4 + 5c)
-60x5 ÷ 5x2
-15x2
12x3
-12x7
-12x3
Factorise 6 ab - b2 + 12 ac - 2 bc
( b + 2 c ) ( 6 a - b )
(b - 2c) ( 6a + b )
( b - 2b ) (6a + b )
None of these
If x = -3, y = 5. Find the value of x3y2 + 9x2y - xy + 12x + 15
276
-294
253
-276
The solution of the equation 3 (x - 5) = 5x- 27 is
x = 6
x = 5
x = 4
x = 3