Question

Verify the identity (a+b)^2= a^2+2ab+b^2 geometrically by taking a=3 and b=2

Answer 1

$\huge\mathbb{SOLUTION}}$

$bold{(a+b)^2=a^2+2ab+b^2}}$

Draw a square with the side a+b,I,e 3+2

L.H.S area of whole square

$\large\bold{=(3+2)^2=5^2=25}$

R.H.S. = area of square with 3units + area of square with side 2 units + area of rectangle with sides 3,2units+area of rectangle with sides 2,3 units

$\large\bold{=3^2+2^2+3*2+3*2}$

$\large\bold{=9+4+6+6=25}$

$\large\bold{l.h.s=r.h.s}$

Therefore hence the identity is verified