difference between a^2 + b^2 and (a+b)^2
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Answer==>>
Let take an example
Let a=2 and b=3
a²+b²=(2)²+(3)²=4+9=13
(a+b)²=(2+3)²=(5)²=25
so, difference between them is that
in a²+b² , we have to square one digit especially and in (a+b)², we have too add cofficient like 2,3,4,5... and when there is variables like x and y , so we have to use an identity
(a+b)²=a²+b²+2ab
Answer....
Let take an example
Let a=2 and b=3
a²+b²=(2)²+(3)²=4+9=13
(a+b)²=(2+3)²=(5)²=25
so, difference between them is that
in a²+b² , we have to square one digit especially and in (a+b)², we have too add cofficient like 2,3,4,5... and when there is variables like x and y , so we have to use an identity
(a+b)²=a²+b²+2ab
Answer....
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