Multiply. Show your work.

​(Type your answer in the form a+bi​.)

(√3 + 6i)(√3 - 6i)

To multiply these complex numbers, we can use the FOIL method:

(√3 + 6i)(√3 - 6i)

= √3 * √3 + √3 * (-6i) + 6i * √3 + 6i * (-6i)

= 3 - 6√3i + 6√3i - 36i^2

Remember that i^2 is equal to -1:
= 3 - 6√3i + 6√3i - 36(-1)

= 3 + 36 + 12√3i - 6√3i

Combine like terms:
= 39 + 6√3i - 6√3i

= 39

Therefore, the result of (√3 + 6i)(√3 - 6i) is 39.