In mathematics, a square number or perfect square is an integer that is the square of an integer; in other words, it is the product of some integer with itself.
(a+b)2 =a2+b2+2ab
how to solve
(२+३)2=४+९+१२ =२५
trick method to selve square
find square of any number with in second
memorise this a2 /2ab/b2
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