(a+b)²=a²+b²+ab for a=2,b=3 and a=3,b=2 which is correct ?why?
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( a+b)²= a² + 2ab+ b²
let us solve both the conditions given :
as in 1 case .
a= 2 & b= 3
a² +2ab+ b²
2² + 2×2×3 + 3²
= 4+ 12+ 9
= 13 + 12
= 25 Is our ans in first case .
now in 2 case ...
a= 3 & b= 2
a² +2ab + b²
3²+ 2×3×2 + 2²
= 9+ 12+ 4
= 16+ 9
25 is our ans
hence this solvation proves that both are correct ..
may it help u
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