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# section15 - The complex conjugate of a + bi is a-bi ....

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MAT 111 - College Algebra Section 1.5 - Complex Numbers A complex number in standard form is a + bi . Two complex numbers a + bi and c + di are equal if and only if a = c and b = d . Operations with complex numbers: 1. Addition : ( a + bi ) + ( c + di ) = ( a + c ) + ( b + d ) i Example : (2 + 3 i ) + (1 - 5 i ) 2. Subtraction : ( a + bi ) - ( c + di ) = ( a - c ) + ( b - d ) i Example : (2 + 3 i ) - (1 - 5 i ) 3. Multiplication : Example : (2 + 3 i )(1 - 5 i ) Complex Conjugate :

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Unformatted text preview: The complex conjugate of a + bi is a-bi . Example : Write the quotient 2 + 3 i 1-5 i in standard form. Examples : 1. Perform the operations and write the complex number in standard form. (a) √-3 √-12 (b) √-12-√-75 2. Solve the following equation 9 x 2-6 x + 37 = 0 ....
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## This note was uploaded on 01/17/2012 for the course MATH 111 taught by Professor Carolineboulis during the Fall '10 term at Lee.

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section15 - The complex conjugate of a + bi is a-bi ....

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