Algebraic identities Flashcards
1
Q
(x+y)^2
A
x^2+ 2xy + y^2
2
Q
(x-y)^2
A
x^2 + y^2 -2xy
3
Q
x^2- y^2
A
(x+y)(x-y)
4
Q
(x+a)(x+b)
A
x^2 + (a+b)x + ab
5
Q
(x+y+z)^2
A
x^ 2+ y^2 + z^2 + 2 (xy + yz +xz)
6
Q
x^3 + y^3 + z^3 - 3xyz
A
(x+y+z)(x^2+y^2+z^2-xy-yz-xz)
7
Q
x^3 - y^3
A
(x-y)(x^2+ xy + y^2)
8
Q
x^3 + y^3
A
(x+y)(x^2 -xy + y^2)
9
Q
(x+y)^3
A
x^3 + y^3 + 3xy(x+y)
10
Q
(x-y)^3
A
x^3-y^3-3xy(x-y)
