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Express (4 - 5i)(5 + 5i) in the form a + bi where a and b are integers and i^2 = -1.

 Jul 16, 2021

Best Answer 

 #1
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(4-5i)(5+5i)=20+20i-25i-25(-1)

=20-5i+25

=45-5i

 Jul 16, 2021
 #1
avatar+805 
+1
Best Answer

(4-5i)(5+5i)=20+20i-25i-25(-1)

=20-5i+25

=45-5i

MathProblemSolver101 Jul 16, 2021

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