If A = x2 - 2 x - 5, then the additive inverse of A is
-5 - 2 x + x2
x2 + 2 x + 5
-x2 - 2 x + 5
-x2 + 2 x + 5
If a-1/a =b then a2+1/a2
b2
b2+2
b2- 1/b2
b2-2
(a - b - c)2 =
a2 - b2 - c2 - 2 ab + 2 bc - 2 ca
a2 + b2 + c2 - ab + bc - ca
a2 + b2 + c2 - 2 ab + 2 bc - 2 ca
a2 + b2 + c2
(n+1) (n-1) (n2+1)
n4+1
n4-1
n4+4
n4-4
If x+1/x = 3 then x2 + 1/x2 =
9
7
6
3
(-3 x2) + (6 x2) + (-x2) + 4 x2 =
6 x2
14 x2
-6 x2
7 x2
If x = 2 then (1/2) x3 is
8
2
4
1
For any two polynomials A and B A-B ≠ B-A. Express in mathematical language.
Polynomials are closed w.r.t addition
Polynomials are not closed w.r.t addition
Polynomials are closed w.r.t subtraction
Polynomials are not closed w.r.t subtraction
(x+3)(x-5)=
x2- 15
x2+15
x2-2 x- 15
x2+2 x- 15
(a+b)2 - (a-b)2 =
a2-b2
4 ab
2 ab
2 a2 + 8 b2
