Question

(-1+√3)³ is real number?​

Answer 1

Step-by-step explanation:

(√3 i - 1)³

using the formula

(a - b)³ = a³ - b³ - 3 a²b + 3 ab²

expanding the cube

(√3)³ i³ - 1³ - 3 (√3 i)² (1) + 3 (√3 i) (1)²

- 3√3 i - 1 - 9 i² + 3√3 i

- 3√3 i - 1 - 9 (-1) + 3√3 i                     (Since i² = - 1)

- 3√3 i - 1 + 9 + 3√3 i

8

hence proved

Answer 2

Answer:

Yes it is a real number