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
(x - 1/x)2 =
x2 + 1/x2
x2 - 1/x2
x2 + 2 + 1/x2
x2- 2 +1/x2
If a-1/a =b then a2+1/a2
b2
b2+2
b2- 1/b2
b2-2
(a3+b3+c3- 3 abc) ÷ (a+b+c) =
a2+b2+c2- 3 abc
a2+b2+c2+ab+bc+ca
a2+b2+c2- ab+bc
a2+b2+c2- ab-bc-ca
(2 x + 3 y)2
2 x2 + 6 xy + 9 y2
4 x 2+ 9 y2
4 x2 + 6 xy + 9 y2
4 x2 + 12 xy + 9 y2
(3 x - y) (9 x2 + 3 xy + y2)=
9 x2 + y2
27 x3 - y3
27 x3 + y3
9 x2 - y2
If x = 2 then (1/2) x3 is
8
2
4
1
The quotient when x2-x-6 is divided by x+2.
x-3
x-2
x+2
x
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
(x + 3)(x2 - 3 x + 9)
x3 + 27
x3 - 27
x3 - 9 x + 27
x3 + 81
