Q. Divide the following complex numbers.2+3i7+17i
Multiplying Numerators and Denominators: Now we multiply the numerators and the denominators separately.Numerator: (7+17i)(2−3i)Denominator: (2+3i)(2−3i)
Expanding the Numerator: First, we'll expand the numerator using the distributive property (FOIL method).(7+17i)(2−3i)=7(2)+7(−3i)+17i(2)+17i(−3i)=14−21i+34i−51i2Since i2=−1, we replace −51i2 with 51.=14−21i+34i+51=65+13i
Expanding the Denominator: Next, we'll expand the denominator. Since we're multiplying a complex number by its conjugate, the result will be a real number.(2+3i)(2−3i)=2(2)+2(−3i)+3i(2)−3i(3i)=4−6i+6i−9i2Again, replacing i2 with −1 gives us:=4−9(−1)=4+9=13
Simplifying the Numerator and Denominator: Now we have the simplified numerator and denominator:Numerator: 65+13iDenominator: 13We divide the real and imaginary parts of the numerator by the denominator separately.Real part: 1365Imaginary part: 1313i
Dividing the Real and Imaginary Parts: Dividing the real part: 1365=5 Dividing the imaginary part: 1313i=i So the quotient is: 5+i
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