If x = -3, y = 5. Find the value of x3y2 + 9x2y - xy + 12x + 15
276
-294
253
-276
Factorize 21a2bc + 28ab2c + 35abc2
7a2bc(3a + 4b + 5c)
3ab2c(3a + 46 + 5c)
7abc(3a + 4b + 5c)
7ab2c(3a + 4 + 5c)
Factorise 3m3 - 6m2 :
3m (m -2 )
3m2 (m-2)
3m2 ( m + 2 )
3m (m2 - 2)
If x = 7, find the value of the expression x3 + 7x2 + 4x + 2
748
685
716
694
Factorize 5a ( 2x – 3y ) + 2b ( 2x – 3y):
(2x - 3y) (5a + 2b)
(2x + 3y) (5a - 2b)
(2x + 3y ) ( a + 2b )
None of these
One of the factors of x2 + 1/x2 +x - 2x -2/x is
x - 1/x
x + 1/x - 1
x+ 1/x
x2 + 1/x2
If x + 1/x = 8, then the value of x2 + 1/x2 is
66
68
61
62
The product of (2a - 5b)(a + 3b) is
2a2 - ab + 15b2
2a2 + ab + 15b2
2a2 + ab - 15b2
The solution of the equation 3 (x - 5) = 5x- 27 is
x = 6
x = 5
x = 4
x = 3
x3 ÷ x3 =
0
1
x
