Question

Multiply each pair of conjugates

(2 sqrt6 +8) (2 sqrt6 -8)

Answer 1

Answer: -40

Explanation:

(2 sqrt6 + 8) (2 sqrt6 - 8)

(2√6 + 8) (2√6 - 8)

2√6(2√6 - 8) + 8(2√6 - 8)

(2√6)^2 + (2√6 × -8) + (8 × 2√6) +(8 × -8)

(4 × 6) + (-16√6) + (16√6) + ( -64 )

24 - 16√6 + 16√6 - 64

24 - 64

-40