Question

Please help. Simplify
(-7+7i)(-8-5i)

Answer 1

(-7+7i)(-8-5i)

=56+35i-56i-35i^2

=-35i^2-21i+56

=-5i^2-3i+8

Answer 2

$(56 - 56i + 35i - 35 {i}^{2} ) \\ = 91 - 21i$

because i^2= (-1)