Question

Verify the identity (a+b)2 = a + 2ab + b? geometrically by taking
a=5units b =2 unit
​

Answer 1

Answer:

a = 5 units

b = 2 units

(5-2)2 = (5)2 + 2(5)(2) + (2)2

(3)2 = 25 - 20 + 4

9 = 5 + 4

9 = 9

LHS = RHS

hence proved

Answer 2

$(5 + 2) ^{2} = 5 + 2 \times 5 \times 2 + 2 \\ 7 ^{2} = 5 + 20 + 2 \\ 49 = 27$

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