Question

which are the four identities of arthematic

Answer 1

Hey dear!



Here is yr answer......


Four identities (fr 8th standard) :


(x+y)² = x² + 2xy + y²

(x-y)² = x² -2xy + y²

(x+y)(x-y) = x² - y²

(x+y+z)² = x² + y² + z² + 2xy +2yz + 2zx



Hope it hlpz....

^_^

Answer 2

(a+b)²=a²+2ab+b²
(a-b²)=a²-2ab+b²
(X+a)(X+b)=x²+(a+b)X+ab
a²-b²=(a+b)(a-b)
Hope it helps.....