Answer:
a 6+ 8i
b -5 + 5i
c 34i
d 8 + i
Step-by-step explanation:
<h3>a)(2 +5i)+(4 +3i)</h3>
<em>Add them together </em>6 + 8i
<h3>b)(−1+2i) − (4 − 3i)</h3>
<em>Add them together </em>-5 + 5i
<h3>c)(5+3i)(3 +5i)</h3>
<em>Multiply it out</em> 15 + 25i + 9i + 15
<em>Add them together (
= the number times -1) </em> 34i
<h3>d)(1 +i)(2 − 3i) +3i(1− i) − i</h3>
<em>Multiply it out</em> (2 - 3i + 2i - 3
) + (3i - 3
) - i
<em>Add what is in the parenthesis together (
= the number times -1) </em>(5 - i) + (3 + 3i) - i
<em>Add them together </em>8 + i