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Intermediate Algebra – Student Workbook – Second Edition 2013

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Lesson 5b - Solving Quadratic Equations<br />

Practice Problems<br />

d) 6x 2 <strong>–</strong> 4x = 1<br />

6. Simplify each of the following and write in the form a + bi. To work with i on your<br />

calculator, press MODE then change REAL to a+bi by using your arrow keys. The i button<br />

is on the bottom row.<br />

a) 49 <br />

b) 11 <br />

c) (4 <strong>–</strong> 2i) <strong>–</strong> (6 + 8i) = d) 3i(2 <strong>–</strong> 4i) =<br />

e) (3 <strong>–</strong> i)(2 + i) = f) (4 <strong>–</strong> 8i) <strong>–</strong> 3(4 + 4i) =<br />

Scottsdale Community College Page 233 <strong>Intermediate</strong> <strong>Algebra</strong>

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