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Basic algebra
Chapter two, 2 unit Maths
9
Mathematics
11th Grade
06/13/2011
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Term
-x
 Definition
opposite sign of x
Term
a(b+c)
 Definition
= ab+ac
Term
(x+y)(b+c) equals
 Definition
= bx+by+cx+cy
Term
(a+b)^2
(a-b)^2
 Definition
= a^2+2ab+b^2
= a^2-2ab+b^2
Term
(a+b)^3
(a-b)^3
 Definition
= a^3+3a^2b+3ab^2+b^3
= a^3-3a^2b+3ab^2-b^3
Term
ab+ac
 Definition
= a(b+c)
Term
bx+by+cx+cy
 Definition
= b(x+y)+c(x+y)
= (x+y)(b+c)
Term
a^2-b^2
 Definition
= (a-b)(a+b)
Term
a^3+b^3
a^3-b^3
 Definition
= (a+b)(a^2-ab+b^2)
= (a-b)(a^2+ab+b^2)
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