1. The product of two expressions is 9 x^2 - 12x + 16y.if factor is 3x + 4(y - 1), then the other factor is
(a) 3x - 4y
(b) 4y – 3x
(c) 3x + 4y
(d) –3x – 4y
2. The linear polynomial in 'a' which must be added
with the polynomial a4 + 2a3 – 2a2 + a – 1 so that
the resulting polynomial is exactly divisible by
a2 + 2a + 3, is
(a) 11a – 14
(b) 14 - 11a
(C) 11a + 14
(d) -11a - 14
3. The zeroes of the polynomial - 673_232 + 5x +4 are - 1/3, 1/2 & -4. Then the factors of the polynomial are
a) 3x - 1, 1 + 2x , 4 + X and 6
b) 3x + 1 , 1 - 2x, 4 + X & -6
C) 3x -2 , 2 + X , 4x + 1 & 24
d) 1 + 3x , 1 + 2x , 4 - X & 24
4. If x^2 + y^2 + z^2 = 16 & X + y + z = 12, then the value of xy + yz + zx is
a) 128
b) +8
C)64
d) +16
5) if x^3 + y^3 + z^3 = 42,x^2 + y^2 + z^2 = 16, & X + y + z = 6, then the value of xyz is
a) -2
b) 2
C) 6
d) -6
(Class 9)
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