+0

# Complex Numbers

0
62
3

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

Feb 16, 2022

#1
+1382
+3

Distribute the equation, and you get \(20+20i-25i-25i^2\)

After simplifying, you get: \(-25i^2-5i+20\)

Substitute -1 for \(i^2\)\((-25)(-1)-5i+20\)

Simplify again, and we find that the answer is: \(\color{brown}\boxed{-5i+45}\)

Feb 16, 2022
#2
+516
+6

Great step-by-step process and well detailed explanations.

Great job BuilderBoi! Keep working hard!

proyaop  Feb 16, 2022
#3
+1382
+1

Thank You!!!

BuilderBoi  Feb 17, 2022