1022=
204
10404
10400
102
a + b = 8, ab = 15 then a3+b3
130
148
152
174
(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
Arithmetic example for a2- b2= (a+b) (a-b)
(2 x + 3) (3 x - 5)
(2 x + 3 ) (2 x - 3)
103 x 103
53 x 47
(x - 1/x)2 =
x2 + 1/x2
x2 - 1/x2
x2 + 2 + 1/x2
x2- 2 +1/x2
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
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
(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
