Question

a) To verify the identity
a3 + b3 = (a + b)3 - 3ab(a + b) usingcuboids and cubes.
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Answer 1

To verify the identity (a+b)3 = a3 + b3 + 3a2b + 3ab2, we shall take value of a = 3units and value of b = 1unit. First we will make a cube of dimensions (a+b) i.e., (3+1 = 4 units). For this, we will use 64 unit cubes