Identities of algebra
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12
1.(a+b)²= a²+ b²+2ab
2.(a-b)²= a²-2ab +b²
3.(a+b)(a-b)= a²-b²
4.( a+b+c) = a+b+c+2ab+2ba+2ca
5.(x+a) (x+b) = x²+ax+bx+ab
2.(a-b)²= a²-2ab +b²
3.(a+b)(a-b)= a²-b²
4.( a+b+c) = a+b+c+2ab+2ba+2ca
5.(x+a) (x+b) = x²+ax+bx+ab
Answered by
6
(a+b) 2=a2 + b2 + 2ab
a-b)2=a2 + b2-2ab
a-b)2=a2 + b2-2ab
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