all 4 identities of algebraic expressions
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2
(a+b)² = a²+2ab+b²
(a-b) ² = a²-2ab+b²
(a²-b²) = (a+b) (a-b)
(x+a)(x-a) = x²+(a+b)x+ab
i have learned it....
hope it's helpful...
(a-b) ² = a²-2ab+b²
(a²-b²) = (a+b) (a-b)
(x+a)(x-a) = x²+(a+b)x+ab
i have learned it....
hope it's helpful...
Answered by
3
(a+b)2=a2+2ab+b2
(a-b)2=a2-2ab+b2
(a+b) (a-b) =a2-b2
(x+a)(x+b) =x2+(a+b) x+ab
a2 is whole square.
(a-b)2=a2-2ab+b2
(a+b) (a-b) =a2-b2
(x+a)(x+b) =x2+(a+b) x+ab
a2 is whole square.
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