Question

If
a b
+
b a
2, then a3 - b3​

Answer 1

Answer:

a3 -b3 = 0

ab + ba = ab + ab

ab + ba2 = ab +2ab = 2 + a + a + b + b

2 x a + a + b + b  = 2

2/2 =1 a

1 = a + a + b + b

1/4 +1/4 + 1/4 + 1/4 =1

Hence a = 1/4

           b = 1/4

1/4 (a) x3 =3/4

1/4 (b) x3 = 3/4

3/4 - 3/4 =0

Hence, the answer is 0.

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