Find Conjugate: To divide complex numbers, we multiply the numerator and denominator by the conjugate of the denominator. The conjugate of a complex number a+bi is a−bi. So, the conjugate of (3+5i) is (3−5i).
Multiply Numerator and Denominator: Multiply the numerator (2−8i) by the conjugate of the denominator (3−5i).(2−8i)(3−5i)
Use FOIL Method: Use the distributive property (FOIL method) to multiply the two complex numbers.(2×3)+(2×(−5i))+(−8i×3)+(−8i×(−5i))
Perform Multiplication: Perform the multiplication.6−10i−24i+40i2Since i2=−1, replace i2 with −1.6−10i−24i−40
Combine Like Terms: Combine like terms.(6−40)+(−10i−24i)−34−34i
Multiply Denominator by Conjugate: Now, multiply the denominator (3+5i) by its conjugate (3−5i).(3+5i)(3−5i)
Use FOIL Method: Use the distributive property (FOIL method) to multiply the two complex numbers.(3×3)+(3×(−5i))+(5i×3)+(5i×(−5i))
Perform Multiplication: Perform the multiplication.9−15i+15i−25i2Since i2=−1, replace i2 with −1.9−25(−1)
Simplify Expression: Simplify the expression. 9+25
Add Numbers: Add the numbers. 34
Divide Numerator by Denominator: Now we have the simplified numerator and denominator. The numerator is −34−34i, and the denominator is 34. Divide the numerator by the denominator.34−34−34i
Divide Each Term: Divide each term in the numerator by the denominator.(−3434)−(3434i)
Simplify Each Term: Simplify each term.−1−i
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