Which of the following is a false statement ?
A + B = B + A
A . B = B. A
A / B = A .1/B
A-B= B-A
(-3 x2) + (6 x2) + (-x2) + 4 x2 =
6 x2
14 x2
-6 x2
7 x2
(a+b)2 - (a-b)2 =
a2-b2
4 ab
2 ab
2 a2 + 8 b2
(x+3)(x-5)=
x2- 15
x2+15
x2-2 x- 15
x2+2 x- 15
(x - 1/x)2 =
x2 + 1/x2
x2 - 1/x2
x2 + 2 + 1/x2
x2- 2 +1/x2
If x = 1, y = -1 and z = -1 , find the value of x3 + y3 + z3 - 3xyz.
-4
2
0
16
Write in symbols multiplicative identity of polynomials.
A x l = 1 x A = A
A + (-A) = 0
A+0= 0+A=0
A x l/A = l
1022=
204
10404
10400
102
To calculate 103 x 97, which of the following is use to find the above product?
(a+b)2
(a-b)2
(a+b)(a-b)
a3+b3
(n+1) (n-1) (n2+1)
n4+1
n4-1
n4+4
n4-4
