How do you simplify #( 2 + 3i) - ( -4 - 4i)#?
2 Answers
Jan 31, 2016
Explanation is given below
Explanation:
To simplify
Start by opening up the parenthesis
#=2+3i-(-4)-(-4i) quad# distribute the negative
#=2+3i+4+4i quad# #"negative" xx "negative" =" positive"#
Collect the real parts together and do the same for imaginary parts.
#=2+4+3i+4i#
#=6+7i#
Jan 31, 2016
6 + 7i
Explanation:
When adding complex numbers : add the real parts together and
add the imaginary parts together.
( a + bi ) + ( c + di) = a + c + (b + d )i
so ( 2 + 3i ) - ( -4 - 4i ) = 2 + 3i + 4 + 4i = 6 + 7i